23/generated/protocol_messages.html - kafka-site - Git at Google

 <h5>Headers:</h5>
 <pre class="line-numbers"><code class="language-java">Request Header => api_key api_version correlation_id client_id
   api_key => INT16
   api_version => INT16
   correlation_id => INT32
   client_id => NULLABLE_STRING
 </code></pre>
 <table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>api_key</td><td>The id of the request type.</td></tr>
 <tr>
 <td>api_version</td><td>The version of the API.</td></tr>
 <tr>
 <td>correlation_id</td><td>A user-supplied integer value that will be passed back with the response</td></tr>
 <tr>
 <td>client_id</td><td>A user specified identifier for the client making the request.</td></tr>
 </table>
 <pre class="line-numbers"><code class="language-java">Response Header => correlation_id
   correlation_id => INT32
 </code></pre>
 <table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>correlation_id</td><td>The user-supplied value passed in with the request</td></tr>
 </table>
 <h5><a name="The_Messages_Produce">Produce API (Key: 0):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 0) => acks timeout [topic_data]
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 1) => acks timeout [topic_data]
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 2) => acks timeout [topic_data]
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 3) => transactional_id acks timeout [topic_data]
   transactional_id => NULLABLE_STRING
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id or null if the producer is not transactional</td></tr>
 <tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 4) => transactional_id acks timeout [topic_data]
   transactional_id => NULLABLE_STRING
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id or null if the producer is not transactional</td></tr>
 <tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 5) => transactional_id acks timeout [topic_data]
   transactional_id => NULLABLE_STRING
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id or null if the producer is not transactional</td></tr>
 <tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 6) => transactional_id acks timeout [topic_data]
   transactional_id => NULLABLE_STRING
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id or null if the producer is not transactional</td></tr>
 <tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Request (Version: 7) => transactional_id acks timeout [topic_data]
   transactional_id => NULLABLE_STRING
   acks => INT16
   timeout => INT32
   topic_data => topic [data]
     topic => STRING
     data => partition record_set
       partition => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id or null if the producer is not transactional</td></tr>
 <tr>
 <td>acks</td><td>The number of acknowledgments the producer requires the leader to have received before considering a request complete. Allowed values: 0 for no acknowledgments, 1 for only the leader and -1 for the full ISR.</td></tr>
 <tr>
 <td>timeout</td><td>The time to await a response in ms.</td></tr>
 <tr>
 <td>topic_data</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>data</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 0) => [responses]
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset
       partition => INT32
       error_code => INT16
       base_offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 1) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset
       partition => INT32
       error_code => INT16
       base_offset => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 2) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset log_append_time
       partition => INT32
       error_code => INT16
       base_offset => INT64
       log_append_time => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>log_append_time</td><td>The timestamp returned by broker after appending the messages. If CreateTime is used for the topic, the timestamp will be -1. If LogAppendTime is used for the topic, the timestamp will be the broker local time when the messages are appended.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 3) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset log_append_time
       partition => INT32
       error_code => INT16
       base_offset => INT64
       log_append_time => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>log_append_time</td><td>The timestamp returned by broker after appending the messages. If CreateTime is used for the topic, the timestamp will be -1. If LogAppendTime is used for the topic, the timestamp will be the broker local time when the messages are appended.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 4) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset log_append_time
       partition => INT32
       error_code => INT16
       base_offset => INT64
       log_append_time => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>log_append_time</td><td>The timestamp returned by broker after appending the messages. If CreateTime is used for the topic, the timestamp will be -1. If LogAppendTime is used for the topic, the timestamp will be the broker local time when the messages are appended.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 5) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset log_append_time log_start_offset
       partition => INT32
       error_code => INT16
       base_offset => INT64
       log_append_time => INT64
       log_start_offset => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>log_append_time</td><td>The timestamp returned by broker after appending the messages. If CreateTime is used for the topic, the timestamp will be -1. If LogAppendTime is used for the topic, the timestamp will be the broker local time when the messages are appended.</td></tr>
 <tr>
 <td>log_start_offset</td><td>The start offset of the log at the time this produce response was created</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 6) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset log_append_time log_start_offset
       partition => INT32
       error_code => INT16
       base_offset => INT64
       log_append_time => INT64
       log_start_offset => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>log_append_time</td><td>The timestamp returned by broker after appending the messages. If CreateTime is used for the topic, the timestamp will be -1. If LogAppendTime is used for the topic, the timestamp will be the broker local time when the messages are appended.</td></tr>
 <tr>
 <td>log_start_offset</td><td>The start offset of the log at the time this produce response was created</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Produce Response (Version: 7) => [responses] throttle_time_ms
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code base_offset log_append_time log_start_offset
       partition => INT32
       error_code => INT16
       base_offset => INT64
       log_append_time => INT64
       log_start_offset => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>base_offset</td><td>null</td></tr>
 <tr>
 <td>log_append_time</td><td>The timestamp returned by broker after appending the messages. If CreateTime is used for the topic, the timestamp will be -1. If LogAppendTime is used for the topic, the timestamp will be the broker local time when the messages are appended.</td></tr>
 <tr>
 <td>log_start_offset</td><td>The start offset of the log at the time this produce response was created</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_Fetch">Fetch API (Key: 1):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 0) => replica_id max_wait_time min_bytes [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 1) => replica_id max_wait_time min_bytes [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 2) => replica_id max_wait_time min_bytes [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 3) => replica_id max_wait_time min_bytes max_bytes [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 4) => replica_id max_wait_time min_bytes max_bytes isolation_level [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 5) => replica_id max_wait_time min_bytes max_bytes isolation_level [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 6) => replica_id max_wait_time min_bytes max_bytes isolation_level [topics]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 7) => replica_id max_wait_time min_bytes max_bytes isolation_level session_id session_epoch [topics] [forgotten_topics_data]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   session_id => INT32
   session_epoch => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
   forgotten_topics_data => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>session_epoch</td><td>The fetch session epoch</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 <tr>
 <td>forgotten_topics_data</td><td>Topics to remove from the fetch session.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to remove from the fetch session.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 8) => replica_id max_wait_time min_bytes max_bytes isolation_level session_id session_epoch [topics] [forgotten_topics_data]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   session_id => INT32
   session_epoch => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
   forgotten_topics_data => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>session_epoch</td><td>The fetch session epoch</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 <tr>
 <td>forgotten_topics_data</td><td>Topics to remove from the fetch session.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to remove from the fetch session.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 9) => replica_id max_wait_time min_bytes max_bytes isolation_level session_id session_epoch [topics] [forgotten_topics_data]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   session_id => INT32
   session_epoch => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       current_leader_epoch => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
   forgotten_topics_data => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>session_epoch</td><td>The fetch session epoch</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 <tr>
 <td>forgotten_topics_data</td><td>Topics to remove from the fetch session.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to remove from the fetch session.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 10) => replica_id max_wait_time min_bytes max_bytes isolation_level session_id session_epoch [topics] [forgotten_topics_data]
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   session_id => INT32
   session_epoch => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       current_leader_epoch => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
   forgotten_topics_data => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>session_epoch</td><td>The fetch session epoch</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 <tr>
 <td>forgotten_topics_data</td><td>Topics to remove from the fetch session.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to remove from the fetch session.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Request (Version: 11) => replica_id max_wait_time min_bytes max_bytes isolation_level session_id session_epoch [topics] [forgotten_topics_data] rack_id
   replica_id => INT32
   max_wait_time => INT32
   min_bytes => INT32
   max_bytes => INT32
   isolation_level => INT8
   session_id => INT32
   session_epoch => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch fetch_offset log_start_offset partition_max_bytes
       partition => INT32
       current_leader_epoch => INT32
       fetch_offset => INT64
       log_start_offset => INT64
       partition_max_bytes => INT32
   forgotten_topics_data => topic [partitions]
     topic => STRING
     partitions => INT32
   rack_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>max_wait_time</td><td>Maximum time in ms to wait for the response.</td></tr>
 <tr>
 <td>min_bytes</td><td>Minimum bytes to accumulate in the response.</td></tr>
 <tr>
 <td>max_bytes</td><td>Maximum bytes to accumulate in the response. Note that this is not an absolute maximum, if the first message in the first non-empty partition of the fetch is larger than this value, the message will still be returned to ensure that progress can be made.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>session_epoch</td><td>The fetch session epoch</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch in the order provided.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>fetch_offset</td><td>Message offset.</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset of the follower replica. The field is only used when request is sent by follower. </td></tr>
 <tr>
 <td>partition_max_bytes</td><td>Maximum bytes to fetch.</td></tr>
 <tr>
 <td>forgotten_topics_data</td><td>Topics to remove from the fetch session.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to remove from the fetch session.</td></tr>
 <tr>
 <td>rack_id</td><td>The consumer's rack id</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 0) => [responses]
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark
         partition => INT32
         error_code => INT16
         high_watermark => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 1) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark
         partition => INT32
         error_code => INT16
         high_watermark => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 2) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark
         partition => INT32
         error_code => INT16
         high_watermark => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 3) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark
         partition => INT32
         error_code => INT16
         high_watermark => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 4) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 5) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 6) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 7) => throttle_time_ms error_code session_id [responses]
   throttle_time_ms => INT32
   error_code => INT16
   session_id => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 8) => throttle_time_ms error_code session_id [responses]
   throttle_time_ms => INT32
   error_code => INT16
   session_id => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 9) => throttle_time_ms error_code session_id [responses]
   throttle_time_ms => INT32
   error_code => INT16
   session_id => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 10) => throttle_time_ms error_code session_id [responses]
   throttle_time_ms => INT32
   error_code => INT16
   session_id => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions]
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Fetch Response (Version: 11) => throttle_time_ms error_code session_id [responses]
   throttle_time_ms => INT32
   error_code => INT16
   session_id => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition_header record_set
       partition_header => partition error_code high_watermark last_stable_offset log_start_offset [aborted_transactions] preferred_read_replica
         partition => INT32
         error_code => INT16
         high_watermark => INT64
         last_stable_offset => INT64
         log_start_offset => INT64
         aborted_transactions => producer_id first_offset
           producer_id => INT64
           first_offset => INT64
         preferred_read_replica => INT32
       record_set => RECORDS
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>session_id</td><td>The fetch session ID</td></tr>
 <tr>
 <td>responses</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>null</td></tr>
 <tr>
 <td>partition_header</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>high_watermark</td><td>Last committed offset.</td></tr>
 <tr>
 <td>last_stable_offset</td><td>The last stable offset (or LSO) of the partition. This is the last offset such that the state of all transactional records prior to this offset have been decided (ABORTED or COMMITTED)</td></tr>
 <tr>
 <td>log_start_offset</td><td>Earliest available offset.</td></tr>
 <tr>
 <td>aborted_transactions</td><td>null</td></tr>
 <tr>
 <td>producer_id</td><td>The producer id associated with the aborted transactions</td></tr>
 <tr>
 <td>first_offset</td><td>The first offset in the aborted transaction</td></tr>
 <tr>
 <td>preferred_read_replica</td><td>The ID of the replica that the consumer should prefer.</td></tr>
 <tr>
 <td>record_set</td><td>null</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_ListOffsets">ListOffsets API (Key: 2):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Request (Version: 0) => replica_id [topics]
   replica_id => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition timestamp max_num_offsets
       partition => INT32
       timestamp => INT64
       max_num_offsets => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>topics</td><td>Topics to list offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to list offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>timestamp</td><td>The target timestamp for the partition.</td></tr>
 <tr>
 <td>max_num_offsets</td><td>Maximum offsets to return.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Request (Version: 1) => replica_id [topics]
   replica_id => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition timestamp
       partition => INT32
       timestamp => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>topics</td><td>Topics to list offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to list offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>timestamp</td><td>The target timestamp for the partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Request (Version: 2) => replica_id isolation_level [topics]
   replica_id => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition timestamp
       partition => INT32
       timestamp => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to list offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to list offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>timestamp</td><td>The target timestamp for the partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Request (Version: 3) => replica_id isolation_level [topics]
   replica_id => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition timestamp
       partition => INT32
       timestamp => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to list offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to list offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>timestamp</td><td>The target timestamp for the partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Request (Version: 4) => replica_id isolation_level [topics]
   replica_id => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch timestamp
       partition => INT32
       current_leader_epoch => INT32
       timestamp => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to list offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to list offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>timestamp</td><td>The target timestamp for the partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Request (Version: 5) => replica_id isolation_level [topics]
   replica_id => INT32
   isolation_level => INT8
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch timestamp
       partition => INT32
       current_leader_epoch => INT32
       timestamp => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>isolation_level</td><td>This setting controls the visibility of transactional records. Using READ_UNCOMMITTED (isolation_level = 0) makes all records visible. With READ_COMMITTED (isolation_level = 1), non-transactional and COMMITTED transactional records are visible. To be more concrete, READ_COMMITTED returns all data from offsets smaller than the current LSO (last stable offset), and enables the inclusion of the list of aborted transactions in the result, which allows consumers to discard ABORTED transactional records</td></tr>
 <tr>
 <td>topics</td><td>Topics to list offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to list offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>timestamp</td><td>The target timestamp for the partition.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Response (Version: 0) => [responses]
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code [offsets']
       partition => INT32
       error_code => INT16
       offsets' => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>The listed offsets by topic</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>The listed offsets by partition</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>offsets'</td><td>A list of offsets.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Response (Version: 1) => [responses]
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code timestamp offset
       partition => INT32
       error_code => INT16
       timestamp => INT64
       offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>The listed offsets by topic</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>The listed offsets by partition</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>timestamp</td><td>The timestamp associated with the returned offset</td></tr>
 <tr>
 <td>offset</td><td>The offset found</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Response (Version: 2) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code timestamp offset
       partition => INT32
       error_code => INT16
       timestamp => INT64
       offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>The listed offsets by topic</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>The listed offsets by partition</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>timestamp</td><td>The timestamp associated with the returned offset</td></tr>
 <tr>
 <td>offset</td><td>The offset found</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Response (Version: 3) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code timestamp offset
       partition => INT32
       error_code => INT16
       timestamp => INT64
       offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>The listed offsets by topic</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>The listed offsets by partition</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>timestamp</td><td>The timestamp associated with the returned offset</td></tr>
 <tr>
 <td>offset</td><td>The offset found</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Response (Version: 4) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code timestamp offset leader_epoch
       partition => INT32
       error_code => INT16
       timestamp => INT64
       offset => INT64
       leader_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>The listed offsets by topic</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>The listed offsets by partition</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>timestamp</td><td>The timestamp associated with the returned offset</td></tr>
 <tr>
 <td>offset</td><td>The offset found</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListOffsets Response (Version: 5) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition error_code timestamp offset leader_epoch
       partition => INT32
       error_code => INT16
       timestamp => INT64
       offset => INT64
       leader_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>The listed offsets by topic</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>The listed offsets by partition</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>timestamp</td><td>The timestamp associated with the returned offset</td></tr>
 <tr>
 <td>offset</td><td>The offset found</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_Metadata">Metadata API (Key: 3):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 0) => [topics]
   topics => name
     name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 1) => [topics]
   topics => name
     name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 2) => [topics]
   topics => name
     name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 3) => [topics]
   topics => name
     name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 4) => [topics] allow_auto_topic_creation
   topics => name
     name => STRING
   allow_auto_topic_creation => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>allow_auto_topic_creation</td><td>If this is true, the broker may auto-create topics that we requested which do not already exist, if it is configured to do so.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 5) => [topics] allow_auto_topic_creation
   topics => name
     name => STRING
   allow_auto_topic_creation => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>allow_auto_topic_creation</td><td>If this is true, the broker may auto-create topics that we requested which do not already exist, if it is configured to do so.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 6) => [topics] allow_auto_topic_creation
   topics => name
     name => STRING
   allow_auto_topic_creation => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>allow_auto_topic_creation</td><td>If this is true, the broker may auto-create topics that we requested which do not already exist, if it is configured to do so.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 7) => [topics] allow_auto_topic_creation
   topics => name
     name => STRING
   allow_auto_topic_creation => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>allow_auto_topic_creation</td><td>If this is true, the broker may auto-create topics that we requested which do not already exist, if it is configured to do so.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Request (Version: 8) => [topics] allow_auto_topic_creation include_cluster_authorized_operations include_topic_authorized_operations
   topics => name
     name => STRING
   allow_auto_topic_creation => BOOLEAN
   include_cluster_authorized_operations => BOOLEAN
   include_topic_authorized_operations => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to fetch metadata for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>allow_auto_topic_creation</td><td>If this is true, the broker may auto-create topics that we requested which do not already exist, if it is configured to do so.</td></tr>
 <tr>
 <td>include_cluster_authorized_operations</td><td>Whether to include cluster authorized operations.</td></tr>
 <tr>
 <td>include_topic_authorized_operations</td><td>Whether to include topic authorized operations.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 0) => [brokers] [topics]
   brokers => node_id host port
     node_id => INT32
     host => STRING
     port => INT32
   topics => error_code name [partitions]
     error_code => INT16
     name => STRING
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 1) => [brokers] controller_id [topics]
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 2) => [brokers] cluster_id controller_id [topics]
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 3) => throttle_time_ms [brokers] cluster_id controller_id [topics]
   throttle_time_ms => INT32
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 4) => throttle_time_ms [brokers] cluster_id controller_id [topics]
   throttle_time_ms => INT32
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 5) => throttle_time_ms [brokers] cluster_id controller_id [topics]
   throttle_time_ms => INT32
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes] [offline_replicas]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
       offline_replicas => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 <tr>
 <td>offline_replicas</td><td>The set of offline replicas of this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 6) => throttle_time_ms [brokers] cluster_id controller_id [topics]
   throttle_time_ms => INT32
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id [replica_nodes] [isr_nodes] [offline_replicas]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       replica_nodes => INT32
       isr_nodes => INT32
       offline_replicas => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 <tr>
 <td>offline_replicas</td><td>The set of offline replicas of this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 7) => throttle_time_ms [brokers] cluster_id controller_id [topics]
   throttle_time_ms => INT32
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions]
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id leader_epoch [replica_nodes] [isr_nodes] [offline_replicas]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       leader_epoch => INT32
       replica_nodes => INT32
       isr_nodes => INT32
       offline_replicas => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch of this partition.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 <tr>
 <td>offline_replicas</td><td>The set of offline replicas of this partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Metadata Response (Version: 8) => throttle_time_ms [brokers] cluster_id controller_id [topics] cluster_authorized_operations
   throttle_time_ms => INT32
   brokers => node_id host port rack
     node_id => INT32
     host => STRING
     port => INT32
     rack => NULLABLE_STRING
   cluster_id => NULLABLE_STRING
   controller_id => INT32
   topics => error_code name is_internal [partitions] topic_authorized_operations
     error_code => INT16
     name => STRING
     is_internal => BOOLEAN
     partitions => error_code partition_index leader_id leader_epoch [replica_nodes] [isr_nodes] [offline_replicas]
       error_code => INT16
       partition_index => INT32
       leader_id => INT32
       leader_epoch => INT32
       replica_nodes => INT32
       isr_nodes => INT32
       offline_replicas => INT32
     topic_authorized_operations => INT32
   cluster_authorized_operations => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>brokers</td><td>Each broker in the response.</td></tr>
 <tr>
 <td>node_id</td><td>The broker ID.</td></tr>
 <tr>
 <td>host</td><td>The broker hostname.</td></tr>
 <tr>
 <td>port</td><td>The broker port.</td></tr>
 <tr>
 <td>rack</td><td>The rack of the broker, or null if it has not been assigned to a rack.</td></tr>
 <tr>
 <td>cluster_id</td><td>The cluster ID that responding broker belongs to.</td></tr>
 <tr>
 <td>controller_id</td><td>The ID of the controller broker.</td></tr>
 <tr>
 <td>topics</td><td>Each topic in the response.</td></tr>
 <tr>
 <td>error_code</td><td>The topic error, or 0 if there was no error.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>is_internal</td><td>True if the topic is internal.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition in the topic.</td></tr>
 <tr>
 <td>error_code</td><td>The partition error, or 0 if there was no error.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>leader_id</td><td>The ID of the leader broker.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch of this partition.</td></tr>
 <tr>
 <td>replica_nodes</td><td>The set of all nodes that host this partition.</td></tr>
 <tr>
 <td>isr_nodes</td><td>The set of nodes that are in sync with the leader for this partition.</td></tr>
 <tr>
 <td>offline_replicas</td><td>The set of offline replicas of this partition.</td></tr>
 <tr>
 <td>topic_authorized_operations</td><td>32-bit bitfield to represent authorized operations for this topic.</td></tr>
 <tr>
 <td>cluster_authorized_operations</td><td>32-bit bitfield to represent authorized operations for this cluster.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_LeaderAndIsr">LeaderAndIsr API (Key: 4):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">LeaderAndIsr Request (Version: 0) => controller_id controller_epoch [partition_states] [live_leaders]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas]
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
   live_leaders => id host port
     id => INT32
     host => STRING
     port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>live_leaders</td><td>Live leaders</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaderAndIsr Request (Version: 1) => controller_id controller_epoch [partition_states] [live_leaders]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas] is_new
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
     is_new => BOOLEAN
   live_leaders => id host port
     id => INT32
     host => STRING
     port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>is_new</td><td>Whether the replica should have existed on the broker or not</td></tr>
 <tr>
 <td>live_leaders</td><td>Live leaders</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaderAndIsr Request (Version: 2) => controller_id controller_epoch broker_epoch [topic_states] [live_leaders]
   controller_id => INT32
   controller_epoch => INT32
   broker_epoch => INT64
   topic_states => topic [partition_states]
     topic => STRING
     partition_states => partition controller_epoch leader leader_epoch [isr] zk_version [replicas] is_new
       partition => INT32
       controller_epoch => INT32
       leader => INT32
       leader_epoch => INT32
       isr => INT32
       zk_version => INT32
       replicas => INT32
       is_new => BOOLEAN
   live_leaders => id host port
     id => INT32
     host => STRING
     port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>broker_epoch</td><td>The broker epoch</td></tr>
 <tr>
 <td>topic_states</td><td>Topic states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>is_new</td><td>Whether the replica should have existed on the broker or not</td></tr>
 <tr>
 <td>live_leaders</td><td>Live leaders</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">LeaderAndIsr Response (Version: 0) => error_code [partitions]
   error_code => INT16
   partitions => topic partition error_code
     topic => STRING
     partition => INT32
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partitions</td><td>Response for the requests partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaderAndIsr Response (Version: 1) => error_code [partitions]
   error_code => INT16
   partitions => topic partition error_code
     topic => STRING
     partition => INT32
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partitions</td><td>Response for the requests partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaderAndIsr Response (Version: 2) => error_code [partitions]
   error_code => INT16
   partitions => topic partition error_code
     topic => STRING
     partition => INT32
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partitions</td><td>Response for the requests partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_StopReplica">StopReplica API (Key: 5):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">StopReplica Request (Version: 0) => controller_id controller_epoch delete_partitions [partitions]
   controller_id => INT32
   controller_epoch => INT32
   delete_partitions => BOOLEAN
   partitions => topic partition
     topic => STRING
     partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>delete_partitions</td><td>Boolean which indicates if replica's partitions must be deleted.</td></tr>
 <tr>
 <td>partitions</td><td>The partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">StopReplica Request (Version: 1) => controller_id controller_epoch broker_epoch delete_partitions [partitions]
   controller_id => INT32
   controller_epoch => INT32
   broker_epoch => INT64
   delete_partitions => BOOLEAN
   partitions => topic [partition_ids]
     topic => STRING
     partition_ids => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>broker_epoch</td><td>The broker epoch</td></tr>
 <tr>
 <td>delete_partitions</td><td>Boolean which indicates if replica's partitions must be deleted.</td></tr>
 <tr>
 <td>partitions</td><td>The partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_ids</td><td>The partition ids of a topic</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">StopReplica Response (Version: 0) => error_code [partitions]
   error_code => INT16
   partitions => topic partition error_code
     topic => STRING
     partition => INT32
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partitions</td><td>Response for the requests partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">StopReplica Response (Version: 1) => error_code [partitions]
   error_code => INT16
   partitions => topic partition error_code
     topic => STRING
     partition => INT32
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partitions</td><td>Response for the requests partitions</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_UpdateMetadata">UpdateMetadata API (Key: 6):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Request (Version: 0) => controller_id controller_epoch [partition_states] [live_brokers]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas]
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
   live_brokers => id host port
     id => INT32
     host => STRING
     port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>live_brokers</td><td>Live broekrs</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Request (Version: 1) => controller_id controller_epoch [partition_states] [live_brokers]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas]
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
   live_brokers => id [end_points]
     id => INT32
     end_points => port host security_protocol_type
       port => INT32
       host => STRING
       security_protocol_type => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>live_brokers</td><td>Live broekrs</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>end_points</td><td>The endpoints</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>security_protocol_type</td><td>The security protocol type.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Request (Version: 2) => controller_id controller_epoch [partition_states] [live_brokers]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas]
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
   live_brokers => id [end_points] rack
     id => INT32
     end_points => port host security_protocol_type
       port => INT32
       host => STRING
       security_protocol_type => INT16
     rack => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>live_brokers</td><td>Live broekrs</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>end_points</td><td>The endpoints</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>security_protocol_type</td><td>The security protocol type.</td></tr>
 <tr>
 <td>rack</td><td>The rack</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Request (Version: 3) => controller_id controller_epoch [partition_states] [live_brokers]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas]
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
   live_brokers => id [end_points] rack
     id => INT32
     end_points => port host listener_name security_protocol_type
       port => INT32
       host => STRING
       listener_name => STRING
       security_protocol_type => INT16
     rack => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>live_brokers</td><td>Live broekrs</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>end_points</td><td>The endpoints</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>listener_name</td><td>The listener name.</td></tr>
 <tr>
 <td>security_protocol_type</td><td>The security protocol type.</td></tr>
 <tr>
 <td>rack</td><td>The rack</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Request (Version: 4) => controller_id controller_epoch [partition_states] [live_brokers]
   controller_id => INT32
   controller_epoch => INT32
   partition_states => topic partition controller_epoch leader leader_epoch [isr] zk_version [replicas] [offline_replicas]
     topic => STRING
     partition => INT32
     controller_epoch => INT32
     leader => INT32
     leader_epoch => INT32
     isr => INT32
     zk_version => INT32
     replicas => INT32
     offline_replicas => INT32
   live_brokers => id [end_points] rack
     id => INT32
     end_points => port host listener_name security_protocol_type
       port => INT32
       host => STRING
       listener_name => STRING
       security_protocol_type => INT16
     rack => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>offline_replicas</td><td>The offline replica ids</td></tr>
 <tr>
 <td>live_brokers</td><td>Live broekrs</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>end_points</td><td>The endpoints</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>listener_name</td><td>The listener name.</td></tr>
 <tr>
 <td>security_protocol_type</td><td>The security protocol type.</td></tr>
 <tr>
 <td>rack</td><td>The rack</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Request (Version: 5) => controller_id controller_epoch broker_epoch [topic_states] [live_brokers]
   controller_id => INT32
   controller_epoch => INT32
   broker_epoch => INT64
   topic_states => topic [partition_states]
     topic => STRING
     partition_states => partition controller_epoch leader leader_epoch [isr] zk_version [replicas] [offline_replicas]
       partition => INT32
       controller_epoch => INT32
       leader => INT32
       leader_epoch => INT32
       isr => INT32
       zk_version => INT32
       replicas => INT32
       offline_replicas => INT32
   live_brokers => id [end_points] rack
     id => INT32
     end_points => port host listener_name security_protocol_type
       port => INT32
       host => STRING
       listener_name => STRING
       security_protocol_type => INT16
     rack => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>controller_id</td><td>The controller id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>broker_epoch</td><td>The broker epoch</td></tr>
 <tr>
 <td>topic_states</td><td>Topic states</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_states</td><td>Partition states</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>controller_epoch</td><td>The controller epoch</td></tr>
 <tr>
 <td>leader</td><td>The broker id for the leader.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch.</td></tr>
 <tr>
 <td>isr</td><td>The in sync replica ids.</td></tr>
 <tr>
 <td>zk_version</td><td>The ZK version.</td></tr>
 <tr>
 <td>replicas</td><td>The replica ids.</td></tr>
 <tr>
 <td>offline_replicas</td><td>The offline replica ids</td></tr>
 <tr>
 <td>live_brokers</td><td>Live broekrs</td></tr>
 <tr>
 <td>id</td><td>The broker id</td></tr>
 <tr>
 <td>end_points</td><td>The endpoints</td></tr>
 <tr>
 <td>port</td><td>The port on which the broker accepts requests.</td></tr>
 <tr>
 <td>host</td><td>The hostname of the broker.</td></tr>
 <tr>
 <td>listener_name</td><td>The listener name.</td></tr>
 <tr>
 <td>security_protocol_type</td><td>The security protocol type.</td></tr>
 <tr>
 <td>rack</td><td>The rack</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Response (Version: 0) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Response (Version: 1) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Response (Version: 2) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Response (Version: 3) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Response (Version: 4) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">UpdateMetadata Response (Version: 5) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_ControlledShutdown">ControlledShutdown API (Key: 7):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ControlledShutdown Request (Version: 0) => broker_id
   broker_id => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>broker_id</td><td>The id of the broker for which controlled shutdown has been requested.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ControlledShutdown Request (Version: 1) => broker_id
   broker_id => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>broker_id</td><td>The id of the broker for which controlled shutdown has been requested.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ControlledShutdown Request (Version: 2) => broker_id broker_epoch
   broker_id => INT32
   broker_epoch => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>broker_id</td><td>The id of the broker for which controlled shutdown has been requested.</td></tr>
 <tr>
 <td>broker_epoch</td><td>The broker epoch.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ControlledShutdown Response (Version: 0) => error_code [remaining_partitions]
   error_code => INT16
   remaining_partitions => topic_name partition_index
     topic_name => STRING
     partition_index => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The top-level error code.</td></tr>
 <tr>
 <td>remaining_partitions</td><td>The partitions that the broker still leads.</td></tr>
 <tr>
 <td>topic_name</td><td>The name of the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The index of the partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ControlledShutdown Response (Version: 1) => error_code [remaining_partitions]
   error_code => INT16
   remaining_partitions => topic_name partition_index
     topic_name => STRING
     partition_index => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The top-level error code.</td></tr>
 <tr>
 <td>remaining_partitions</td><td>The partitions that the broker still leads.</td></tr>
 <tr>
 <td>topic_name</td><td>The name of the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The index of the partition.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ControlledShutdown Response (Version: 2) => error_code [remaining_partitions]
   error_code => INT16
   remaining_partitions => topic_name partition_index
     topic_name => STRING
     partition_index => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The top-level error code.</td></tr>
 <tr>
 <td>remaining_partitions</td><td>The partitions that the broker still leads.</td></tr>
 <tr>
 <td>topic_name</td><td>The name of the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The index of the partition.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_OffsetCommit">OffsetCommit API (Key: 8):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 0) => group_id [topics]
   group_id => STRING
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 1) => group_id generation_id member_id [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset commit_timestamp committed_metadata
       partition_index => INT32
       committed_offset => INT64
       commit_timestamp => INT64
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>commit_timestamp</td><td>The timestamp of the commit.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 2) => group_id generation_id member_id retention_time_ms [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   retention_time_ms => INT64
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>retention_time_ms</td><td>The time period in ms to retain the offset.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 3) => group_id generation_id member_id retention_time_ms [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   retention_time_ms => INT64
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>retention_time_ms</td><td>The time period in ms to retain the offset.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 4) => group_id generation_id member_id retention_time_ms [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   retention_time_ms => INT64
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>retention_time_ms</td><td>The time period in ms to retain the offset.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 5) => group_id generation_id member_id [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 6) => group_id generation_id member_id [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_leader_epoch committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_leader_epoch => INT32
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_leader_epoch</td><td>The leader epoch of this partition.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Request (Version: 7) => group_id generation_id member_id group_instance_id [topics]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   group_instance_id => NULLABLE_STRING
   topics => name [partitions]
     name => STRING
     partitions => partition_index committed_offset committed_leader_epoch committed_metadata
       partition_index => INT32
       committed_offset => INT64
       committed_leader_epoch => INT32
       committed_metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>group_instance_id</td><td>The unique identifier of the consumer instance provided by end user.</td></tr>
 <tr>
 <td>topics</td><td>The topics to commit offsets for.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>Each partition to commit offsets for.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>committed_offset</td><td>The message offset to be committed.</td></tr>
 <tr>
 <td>committed_leader_epoch</td><td>The leader epoch of this partition.</td></tr>
 <tr>
 <td>committed_metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 0) => [topics]
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 1) => [topics]
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 2) => [topics]
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 3) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 4) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 5) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 6) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetCommit Response (Version: 7) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name [partitions]
     name => STRING
     partitions => partition_index error_code
       partition_index => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>The responses for each topic.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>partitions</td><td>The responses for each partition in the topic.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_OffsetFetch">OffsetFetch API (Key: 9):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Request (Version: 0) => group_id [topics]
   group_id => STRING
   topics => topic [partitions]
     topic => STRING
     partitions => partition
       partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Request (Version: 1) => group_id [topics]
   group_id => STRING
   topics => topic [partitions]
     topic => STRING
     partitions => partition
       partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch offsets.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Request (Version: 2) => group_id [topics]
   group_id => STRING
   topics => topic [partitions]
     topic => STRING
     partitions => partition
       partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch offsets. If the topic array is null fetch offsets for all topics.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Request (Version: 3) => group_id [topics]
   group_id => STRING
   topics => topic [partitions]
     topic => STRING
     partitions => partition
       partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch offsets. If the topic array is null fetch offsets for all topics.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Request (Version: 4) => group_id [topics]
   group_id => STRING
   topics => topic [partitions]
     topic => STRING
     partitions => partition
       partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch offsets. If the topic array is null fetch offsets for all topics.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Request (Version: 5) => group_id [topics]
   group_id => STRING
   topics => topic [partitions]
     topic => STRING
     partitions => partition
       partition => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>topics</td><td>Topics to fetch offsets. If the topic array is null fetch offsets for all topics.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to fetch offsets.</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Response (Version: 0) => [responses]
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition offset metadata error_code
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>Responses by topic for fetched offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>Responses by partition for fetched offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Response (Version: 1) => [responses]
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition offset metadata error_code
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>Responses by topic for fetched offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>Responses by partition for fetched offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Response (Version: 2) => [responses] error_code
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition offset metadata error_code
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
       error_code => INT16
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>Responses by topic for fetched offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>Responses by partition for fetched offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Response (Version: 3) => throttle_time_ms [responses] error_code
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition offset metadata error_code
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
       error_code => INT16
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>Responses by topic for fetched offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>Responses by partition for fetched offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Response (Version: 4) => throttle_time_ms [responses] error_code
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition offset metadata error_code
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
       error_code => INT16
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>Responses by topic for fetched offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>Responses by partition for fetched offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetFetch Response (Version: 5) => throttle_time_ms [responses] error_code
   throttle_time_ms => INT32
   responses => topic [partition_responses]
     topic => STRING
     partition_responses => partition offset leader_epoch metadata error_code
       partition => INT32
       offset => INT64
       leader_epoch => INT32
       metadata => NULLABLE_STRING
       error_code => INT16
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>responses</td><td>Responses by topic for fetched offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_responses</td><td>Responses by partition for fetched offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch, if provided is derived from the last consumed record. This is used by the consumer to check for log truncation and to ensure partition metadata is up to date following a group rebalance.</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_FindCoordinator">FindCoordinator API (Key: 10):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">FindCoordinator Request (Version: 0) => key
   key => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>key</td><td>The coordinator key.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">FindCoordinator Request (Version: 1) => key key_type
   key => STRING
   key_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>key</td><td>The coordinator key.</td></tr>
 <tr>
 <td>key_type</td><td>The coordinator key type.  (Group, transaction, etc.)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">FindCoordinator Request (Version: 2) => key key_type
   key => STRING
   key_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>key</td><td>The coordinator key.</td></tr>
 <tr>
 <td>key_type</td><td>The coordinator key type.  (Group, transaction, etc.)</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">FindCoordinator Response (Version: 0) => error_code node_id host port
   error_code => INT16
   node_id => INT32
   host => STRING
   port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>node_id</td><td>The node id.</td></tr>
 <tr>
 <td>host</td><td>The host name.</td></tr>
 <tr>
 <td>port</td><td>The port.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">FindCoordinator Response (Version: 1) => throttle_time_ms error_code error_message node_id host port
   throttle_time_ms => INT32
   error_code => INT16
   error_message => NULLABLE_STRING
   node_id => INT32
   host => STRING
   port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 <tr>
 <td>node_id</td><td>The node id.</td></tr>
 <tr>
 <td>host</td><td>The host name.</td></tr>
 <tr>
 <td>port</td><td>The port.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">FindCoordinator Response (Version: 2) => throttle_time_ms error_code error_message node_id host port
   throttle_time_ms => INT32
   error_code => INT16
   error_message => NULLABLE_STRING
   node_id => INT32
   host => STRING
   port => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 <tr>
 <td>node_id</td><td>The node id.</td></tr>
 <tr>
 <td>host</td><td>The host name.</td></tr>
 <tr>
 <td>port</td><td>The port.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_JoinGroup">JoinGroup API (Key: 11):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Request (Version: 0) => group_id session_timeout_ms member_id protocol_type [protocols]
   group_id => STRING
   session_timeout_ms => INT32
   member_id => STRING
   protocol_type => STRING
   protocols => name metadata
     name => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group identifier.</td></tr>
 <tr>
 <td>session_timeout_ms</td><td>The coordinator considers the consumer dead if it receives no heartbeat after this timeout in milliseconds.</td></tr>
 <tr>
 <td>member_id</td><td>The member id assigned by the group coordinator.</td></tr>
 <tr>
 <td>protocol_type</td><td>The unique name the for class of protocols implemented by the group we want to join.</td></tr>
 <tr>
 <td>protocols</td><td>The list of protocols that the member supports.</td></tr>
 <tr>
 <td>name</td><td>The protocol name.</td></tr>
 <tr>
 <td>metadata</td><td>The protocol metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Request (Version: 1) => group_id session_timeout_ms rebalance_timeout_ms member_id protocol_type [protocols]
   group_id => STRING
   session_timeout_ms => INT32
   rebalance_timeout_ms => INT32
   member_id => STRING
   protocol_type => STRING
   protocols => name metadata
     name => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group identifier.</td></tr>
 <tr>
 <td>session_timeout_ms</td><td>The coordinator considers the consumer dead if it receives no heartbeat after this timeout in milliseconds.</td></tr>
 <tr>
 <td>rebalance_timeout_ms</td><td>The maximum time in milliseconds that the coordinator will wait for each member to rejoin when rebalancing the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member id assigned by the group coordinator.</td></tr>
 <tr>
 <td>protocol_type</td><td>The unique name the for class of protocols implemented by the group we want to join.</td></tr>
 <tr>
 <td>protocols</td><td>The list of protocols that the member supports.</td></tr>
 <tr>
 <td>name</td><td>The protocol name.</td></tr>
 <tr>
 <td>metadata</td><td>The protocol metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Request (Version: 2) => group_id session_timeout_ms rebalance_timeout_ms member_id protocol_type [protocols]
   group_id => STRING
   session_timeout_ms => INT32
   rebalance_timeout_ms => INT32
   member_id => STRING
   protocol_type => STRING
   protocols => name metadata
     name => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group identifier.</td></tr>
 <tr>
 <td>session_timeout_ms</td><td>The coordinator considers the consumer dead if it receives no heartbeat after this timeout in milliseconds.</td></tr>
 <tr>
 <td>rebalance_timeout_ms</td><td>The maximum time in milliseconds that the coordinator will wait for each member to rejoin when rebalancing the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member id assigned by the group coordinator.</td></tr>
 <tr>
 <td>protocol_type</td><td>The unique name the for class of protocols implemented by the group we want to join.</td></tr>
 <tr>
 <td>protocols</td><td>The list of protocols that the member supports.</td></tr>
 <tr>
 <td>name</td><td>The protocol name.</td></tr>
 <tr>
 <td>metadata</td><td>The protocol metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Request (Version: 3) => group_id session_timeout_ms rebalance_timeout_ms member_id protocol_type [protocols]
   group_id => STRING
   session_timeout_ms => INT32
   rebalance_timeout_ms => INT32
   member_id => STRING
   protocol_type => STRING
   protocols => name metadata
     name => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group identifier.</td></tr>
 <tr>
 <td>session_timeout_ms</td><td>The coordinator considers the consumer dead if it receives no heartbeat after this timeout in milliseconds.</td></tr>
 <tr>
 <td>rebalance_timeout_ms</td><td>The maximum time in milliseconds that the coordinator will wait for each member to rejoin when rebalancing the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member id assigned by the group coordinator.</td></tr>
 <tr>
 <td>protocol_type</td><td>The unique name the for class of protocols implemented by the group we want to join.</td></tr>
 <tr>
 <td>protocols</td><td>The list of protocols that the member supports.</td></tr>
 <tr>
 <td>name</td><td>The protocol name.</td></tr>
 <tr>
 <td>metadata</td><td>The protocol metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Request (Version: 4) => group_id session_timeout_ms rebalance_timeout_ms member_id protocol_type [protocols]
   group_id => STRING
   session_timeout_ms => INT32
   rebalance_timeout_ms => INT32
   member_id => STRING
   protocol_type => STRING
   protocols => name metadata
     name => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group identifier.</td></tr>
 <tr>
 <td>session_timeout_ms</td><td>The coordinator considers the consumer dead if it receives no heartbeat after this timeout in milliseconds.</td></tr>
 <tr>
 <td>rebalance_timeout_ms</td><td>The maximum time in milliseconds that the coordinator will wait for each member to rejoin when rebalancing the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member id assigned by the group coordinator.</td></tr>
 <tr>
 <td>protocol_type</td><td>The unique name the for class of protocols implemented by the group we want to join.</td></tr>
 <tr>
 <td>protocols</td><td>The list of protocols that the member supports.</td></tr>
 <tr>
 <td>name</td><td>The protocol name.</td></tr>
 <tr>
 <td>metadata</td><td>The protocol metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Request (Version: 5) => group_id session_timeout_ms rebalance_timeout_ms member_id group_instance_id protocol_type [protocols]
   group_id => STRING
   session_timeout_ms => INT32
   rebalance_timeout_ms => INT32
   member_id => STRING
   group_instance_id => NULLABLE_STRING
   protocol_type => STRING
   protocols => name metadata
     name => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group identifier.</td></tr>
 <tr>
 <td>session_timeout_ms</td><td>The coordinator considers the consumer dead if it receives no heartbeat after this timeout in milliseconds.</td></tr>
 <tr>
 <td>rebalance_timeout_ms</td><td>The maximum time in milliseconds that the coordinator will wait for each member to rejoin when rebalancing the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member id assigned by the group coordinator.</td></tr>
 <tr>
 <td>group_instance_id</td><td>The unique identifier of the consumer instance provided by end user.</td></tr>
 <tr>
 <td>protocol_type</td><td>The unique name the for class of protocols implemented by the group we want to join.</td></tr>
 <tr>
 <td>protocols</td><td>The list of protocols that the member supports.</td></tr>
 <tr>
 <td>name</td><td>The protocol name.</td></tr>
 <tr>
 <td>metadata</td><td>The protocol metadata.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Response (Version: 0) => error_code generation_id protocol_name leader member_id [members]
   error_code => INT16
   generation_id => INT32
   protocol_name => STRING
   leader => STRING
   member_id => STRING
   members => member_id metadata
     member_id => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation ID of the group.</td></tr>
 <tr>
 <td>protocol_name</td><td>The group protocol selected by the coordinator.</td></tr>
 <tr>
 <td>leader</td><td>The leader of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>members</td><td></td></tr>
 <tr>
 <td>member_id</td><td>The group member ID.</td></tr>
 <tr>
 <td>metadata</td><td>The group member metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Response (Version: 1) => error_code generation_id protocol_name leader member_id [members]
   error_code => INT16
   generation_id => INT32
   protocol_name => STRING
   leader => STRING
   member_id => STRING
   members => member_id metadata
     member_id => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation ID of the group.</td></tr>
 <tr>
 <td>protocol_name</td><td>The group protocol selected by the coordinator.</td></tr>
 <tr>
 <td>leader</td><td>The leader of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>members</td><td></td></tr>
 <tr>
 <td>member_id</td><td>The group member ID.</td></tr>
 <tr>
 <td>metadata</td><td>The group member metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Response (Version: 2) => throttle_time_ms error_code generation_id protocol_name leader member_id [members]
   throttle_time_ms => INT32
   error_code => INT16
   generation_id => INT32
   protocol_name => STRING
   leader => STRING
   member_id => STRING
   members => member_id metadata
     member_id => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation ID of the group.</td></tr>
 <tr>
 <td>protocol_name</td><td>The group protocol selected by the coordinator.</td></tr>
 <tr>
 <td>leader</td><td>The leader of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>members</td><td></td></tr>
 <tr>
 <td>member_id</td><td>The group member ID.</td></tr>
 <tr>
 <td>metadata</td><td>The group member metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Response (Version: 3) => throttle_time_ms error_code generation_id protocol_name leader member_id [members]
   throttle_time_ms => INT32
   error_code => INT16
   generation_id => INT32
   protocol_name => STRING
   leader => STRING
   member_id => STRING
   members => member_id metadata
     member_id => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation ID of the group.</td></tr>
 <tr>
 <td>protocol_name</td><td>The group protocol selected by the coordinator.</td></tr>
 <tr>
 <td>leader</td><td>The leader of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>members</td><td></td></tr>
 <tr>
 <td>member_id</td><td>The group member ID.</td></tr>
 <tr>
 <td>metadata</td><td>The group member metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Response (Version: 4) => throttle_time_ms error_code generation_id protocol_name leader member_id [members]
   throttle_time_ms => INT32
   error_code => INT16
   generation_id => INT32
   protocol_name => STRING
   leader => STRING
   member_id => STRING
   members => member_id metadata
     member_id => STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation ID of the group.</td></tr>
 <tr>
 <td>protocol_name</td><td>The group protocol selected by the coordinator.</td></tr>
 <tr>
 <td>leader</td><td>The leader of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>members</td><td></td></tr>
 <tr>
 <td>member_id</td><td>The group member ID.</td></tr>
 <tr>
 <td>metadata</td><td>The group member metadata.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">JoinGroup Response (Version: 5) => throttle_time_ms error_code generation_id protocol_name leader member_id [members]
   throttle_time_ms => INT32
   error_code => INT16
   generation_id => INT32
   protocol_name => STRING
   leader => STRING
   member_id => STRING
   members => member_id group_instance_id metadata
     member_id => STRING
     group_instance_id => NULLABLE_STRING
     metadata => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation ID of the group.</td></tr>
 <tr>
 <td>protocol_name</td><td>The group protocol selected by the coordinator.</td></tr>
 <tr>
 <td>leader</td><td>The leader of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>members</td><td></td></tr>
 <tr>
 <td>member_id</td><td>The group member ID.</td></tr>
 <tr>
 <td>group_instance_id</td><td>The unique identifier of the consumer instance provided by end user.</td></tr>
 <tr>
 <td>metadata</td><td>The group member metadata.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_Heartbeat">Heartbeat API (Key: 12):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Request (Version: 0) => group_id generation_id member_id
   group_id => STRING
   generation_id => INT32
   member_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group id.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Request (Version: 1) => group_id generation_id member_id
   group_id => STRING
   generation_id => INT32
   member_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group id.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Request (Version: 2) => group_id generation_id member_id
   group_id => STRING
   generation_id => INT32
   member_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group id.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Request (Version: 3) => group_id generation_id member_id group_instance_id
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   group_instance_id => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The group id.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID.</td></tr>
 <tr>
 <td>group_instance_id</td><td>The unique identifier of the consumer instance provided by end user.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Response (Version: 0) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Response (Version: 1) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Response (Version: 2) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">Heartbeat Response (Version: 3) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_LeaveGroup">LeaveGroup API (Key: 13):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">LeaveGroup Request (Version: 0) => group_id member_id
   group_id => STRING
   member_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The ID of the group to leave.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID to remove from the group.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaveGroup Request (Version: 1) => group_id member_id
   group_id => STRING
   member_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The ID of the group to leave.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID to remove from the group.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaveGroup Request (Version: 2) => group_id member_id
   group_id => STRING
   member_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The ID of the group to leave.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID to remove from the group.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">LeaveGroup Response (Version: 0) => error_code
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaveGroup Response (Version: 1) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">LeaveGroup Response (Version: 2) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_SyncGroup">SyncGroup API (Key: 14):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Request (Version: 0) => group_id generation_id member_id [assignments]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   assignments => member_id assignment
     member_id => STRING
     assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group.</td></tr>
 <tr>
 <td>assignments</td><td>Each assignment.</td></tr>
 <tr>
 <td>member_id</td><td>The ID of the member to assign.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Request (Version: 1) => group_id generation_id member_id [assignments]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   assignments => member_id assignment
     member_id => STRING
     assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group.</td></tr>
 <tr>
 <td>assignments</td><td>Each assignment.</td></tr>
 <tr>
 <td>member_id</td><td>The ID of the member to assign.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Request (Version: 2) => group_id generation_id member_id [assignments]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   assignments => member_id assignment
     member_id => STRING
     assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group.</td></tr>
 <tr>
 <td>assignments</td><td>Each assignment.</td></tr>
 <tr>
 <td>member_id</td><td>The ID of the member to assign.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Request (Version: 3) => group_id generation_id member_id group_instance_id [assignments]
   group_id => STRING
   generation_id => INT32
   member_id => STRING
   group_instance_id => NULLABLE_STRING
   assignments => member_id assignment
     member_id => STRING
     assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>group_id</td><td>The unique group identifier.</td></tr>
 <tr>
 <td>generation_id</td><td>The generation of the group.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group.</td></tr>
 <tr>
 <td>group_instance_id</td><td>The unique identifier of the consumer instance provided by end user.</td></tr>
 <tr>
 <td>assignments</td><td>Each assignment.</td></tr>
 <tr>
 <td>member_id</td><td>The ID of the member to assign.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Response (Version: 0) => error_code assignment
   error_code => INT16
   assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Response (Version: 1) => throttle_time_ms error_code assignment
   throttle_time_ms => INT32
   error_code => INT16
   assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Response (Version: 2) => throttle_time_ms error_code assignment
   throttle_time_ms => INT32
   error_code => INT16
   assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SyncGroup Response (Version: 3) => throttle_time_ms error_code assignment
   throttle_time_ms => INT32
   error_code => INT16
   assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>assignment</td><td>The member assignment.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DescribeGroups">DescribeGroups API (Key: 15):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Request (Version: 0) => [groups]
   groups => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>The names of the groups to describe</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Request (Version: 1) => [groups]
   groups => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>The names of the groups to describe</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Request (Version: 2) => [groups]
   groups => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>The names of the groups to describe</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Request (Version: 3) => [groups] include_authorized_operations
   groups => STRING
   include_authorized_operations => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>The names of the groups to describe</td></tr>
 <tr>
 <td>include_authorized_operations</td><td>Whether to include authorized operations.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Response (Version: 0) => [groups]
   groups => error_code group_id group_state protocol_type protocol_data [members]
     error_code => INT16
     group_id => STRING
     group_state => STRING
     protocol_type => STRING
     protocol_data => STRING
     members => member_id client_id client_host member_metadata member_assignment
       member_id => STRING
       client_id => STRING
       client_host => STRING
       member_metadata => BYTES
       member_assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>Each described group.</td></tr>
 <tr>
 <td>error_code</td><td>The describe error, or 0 if there was no error.</td></tr>
 <tr>
 <td>group_id</td><td>The group ID string.</td></tr>
 <tr>
 <td>group_state</td><td>The group state string, or the empty string.</td></tr>
 <tr>
 <td>protocol_type</td><td>The group protocol type, or the empty string.</td></tr>
 <tr>
 <td>protocol_data</td><td>The group protocol data, or the empty string.</td></tr>
 <tr>
 <td>members</td><td>The group members.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>client_id</td><td>The client ID used in the member's latest join group request.</td></tr>
 <tr>
 <td>client_host</td><td>The client host.</td></tr>
 <tr>
 <td>member_metadata</td><td>The metadata corresponding to the current group protocol in use.</td></tr>
 <tr>
 <td>member_assignment</td><td>The current assignment provided by the group leader.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Response (Version: 1) => throttle_time_ms [groups]
   throttle_time_ms => INT32
   groups => error_code group_id group_state protocol_type protocol_data [members]
     error_code => INT16
     group_id => STRING
     group_state => STRING
     protocol_type => STRING
     protocol_data => STRING
     members => member_id client_id client_host member_metadata member_assignment
       member_id => STRING
       client_id => STRING
       client_host => STRING
       member_metadata => BYTES
       member_assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>groups</td><td>Each described group.</td></tr>
 <tr>
 <td>error_code</td><td>The describe error, or 0 if there was no error.</td></tr>
 <tr>
 <td>group_id</td><td>The group ID string.</td></tr>
 <tr>
 <td>group_state</td><td>The group state string, or the empty string.</td></tr>
 <tr>
 <td>protocol_type</td><td>The group protocol type, or the empty string.</td></tr>
 <tr>
 <td>protocol_data</td><td>The group protocol data, or the empty string.</td></tr>
 <tr>
 <td>members</td><td>The group members.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>client_id</td><td>The client ID used in the member's latest join group request.</td></tr>
 <tr>
 <td>client_host</td><td>The client host.</td></tr>
 <tr>
 <td>member_metadata</td><td>The metadata corresponding to the current group protocol in use.</td></tr>
 <tr>
 <td>member_assignment</td><td>The current assignment provided by the group leader.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Response (Version: 2) => throttle_time_ms [groups]
   throttle_time_ms => INT32
   groups => error_code group_id group_state protocol_type protocol_data [members]
     error_code => INT16
     group_id => STRING
     group_state => STRING
     protocol_type => STRING
     protocol_data => STRING
     members => member_id client_id client_host member_metadata member_assignment
       member_id => STRING
       client_id => STRING
       client_host => STRING
       member_metadata => BYTES
       member_assignment => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>groups</td><td>Each described group.</td></tr>
 <tr>
 <td>error_code</td><td>The describe error, or 0 if there was no error.</td></tr>
 <tr>
 <td>group_id</td><td>The group ID string.</td></tr>
 <tr>
 <td>group_state</td><td>The group state string, or the empty string.</td></tr>
 <tr>
 <td>protocol_type</td><td>The group protocol type, or the empty string.</td></tr>
 <tr>
 <td>protocol_data</td><td>The group protocol data, or the empty string.</td></tr>
 <tr>
 <td>members</td><td>The group members.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>client_id</td><td>The client ID used in the member's latest join group request.</td></tr>
 <tr>
 <td>client_host</td><td>The client host.</td></tr>
 <tr>
 <td>member_metadata</td><td>The metadata corresponding to the current group protocol in use.</td></tr>
 <tr>
 <td>member_assignment</td><td>The current assignment provided by the group leader.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeGroups Response (Version: 3) => throttle_time_ms [groups]
   throttle_time_ms => INT32
   groups => error_code group_id group_state protocol_type protocol_data [members] authorized_operations
     error_code => INT16
     group_id => STRING
     group_state => STRING
     protocol_type => STRING
     protocol_data => STRING
     members => member_id client_id client_host member_metadata member_assignment
       member_id => STRING
       client_id => STRING
       client_host => STRING
       member_metadata => BYTES
       member_assignment => BYTES
     authorized_operations => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>groups</td><td>Each described group.</td></tr>
 <tr>
 <td>error_code</td><td>The describe error, or 0 if there was no error.</td></tr>
 <tr>
 <td>group_id</td><td>The group ID string.</td></tr>
 <tr>
 <td>group_state</td><td>The group state string, or the empty string.</td></tr>
 <tr>
 <td>protocol_type</td><td>The group protocol type, or the empty string.</td></tr>
 <tr>
 <td>protocol_data</td><td>The group protocol data, or the empty string.</td></tr>
 <tr>
 <td>members</td><td>The group members.</td></tr>
 <tr>
 <td>member_id</td><td>The member ID assigned by the group coordinator.</td></tr>
 <tr>
 <td>client_id</td><td>The client ID used in the member's latest join group request.</td></tr>
 <tr>
 <td>client_host</td><td>The client host.</td></tr>
 <tr>
 <td>member_metadata</td><td>The metadata corresponding to the current group protocol in use.</td></tr>
 <tr>
 <td>member_assignment</td><td>The current assignment provided by the group leader.</td></tr>
 <tr>
 <td>authorized_operations</td><td>32-bit bitfield to represent authorized operations for this group.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_ListGroups">ListGroups API (Key: 16):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ListGroups Request (Version: 0) =>
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr></table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListGroups Request (Version: 1) =>
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr></table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListGroups Request (Version: 2) =>
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr></table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ListGroups Response (Version: 0) => error_code [groups]
   error_code => INT16
   groups => group_id protocol_type
     group_id => STRING
     protocol_type => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>groups</td><td>null</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>protocol_type</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListGroups Response (Version: 1) => throttle_time_ms error_code [groups]
   throttle_time_ms => INT32
   error_code => INT16
   groups => group_id protocol_type
     group_id => STRING
     protocol_type => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>groups</td><td>null</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>protocol_type</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ListGroups Response (Version: 2) => throttle_time_ms error_code [groups]
   throttle_time_ms => INT32
   error_code => INT16
   groups => group_id protocol_type
     group_id => STRING
     protocol_type => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>groups</td><td>null</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>protocol_type</td><td>null</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_SaslHandshake">SaslHandshake API (Key: 17):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">SaslHandshake Request (Version: 0) => mechanism
   mechanism => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>mechanism</td><td>The SASL mechanism chosen by the client.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SaslHandshake Request (Version: 1) => mechanism
   mechanism => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>mechanism</td><td>The SASL mechanism chosen by the client.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">SaslHandshake Response (Version: 0) => error_code [mechanisms]
   error_code => INT16
   mechanisms => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>mechanisms</td><td>The mechanisms enabled in the server.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SaslHandshake Response (Version: 1) => error_code [mechanisms]
   error_code => INT16
   mechanisms => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>mechanisms</td><td>The mechanisms enabled in the server.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_ApiVersions">ApiVersions API (Key: 18):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ApiVersions Request (Version: 0) =>
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr></table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ApiVersions Request (Version: 1) =>
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr></table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ApiVersions Request (Version: 2) =>
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr></table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ApiVersions Response (Version: 0) => error_code [api_versions]
   error_code => INT16
   api_versions => api_key min_version max_version
     api_key => INT16
     min_version => INT16
     max_version => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>api_versions</td><td>API versions supported by the broker.</td></tr>
 <tr>
 <td>api_key</td><td>API key.</td></tr>
 <tr>
 <td>min_version</td><td>Minimum supported version.</td></tr>
 <tr>
 <td>max_version</td><td>Maximum supported version.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ApiVersions Response (Version: 1) => error_code [api_versions] throttle_time_ms
   error_code => INT16
   api_versions => api_key min_version max_version
     api_key => INT16
     min_version => INT16
     max_version => INT16
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>api_versions</td><td>API versions supported by the broker.</td></tr>
 <tr>
 <td>api_key</td><td>API key.</td></tr>
 <tr>
 <td>min_version</td><td>Minimum supported version.</td></tr>
 <tr>
 <td>max_version</td><td>Maximum supported version.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ApiVersions Response (Version: 2) => error_code [api_versions] throttle_time_ms
   error_code => INT16
   api_versions => api_key min_version max_version
     api_key => INT16
     min_version => INT16
     max_version => INT16
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>api_versions</td><td>API versions supported by the broker.</td></tr>
 <tr>
 <td>api_key</td><td>API key.</td></tr>
 <tr>
 <td>min_version</td><td>Minimum supported version.</td></tr>
 <tr>
 <td>max_version</td><td>Maximum supported version.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_CreateTopics">CreateTopics API (Key: 19):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Request (Version: 0) => [topics] timeout_ms
   topics => name num_partitions replication_factor [assignments] [configs]
     name => STRING
     num_partitions => INT32
     replication_factor => INT16
     assignments => partition_index [broker_ids]
       partition_index => INT32
       broker_ids => INT32
     configs => name value
       name => STRING
       value => NULLABLE_STRING
   timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>num_partitions</td><td>The number of partitions to create in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>replication_factor</td><td>The number of replicas to create for each partition in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>assignments</td><td>The manual partition assignment, or the empty array if we are using automatic assignment.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>broker_ids</td><td>The brokers to place the partition on.</td></tr>
 <tr>
 <td>configs</td><td>The custom topic configurations to set.</td></tr>
 <tr>
 <td>name</td><td>The configuration name.</td></tr>
 <tr>
 <td>value</td><td>The configuration value.</td></tr>
 <tr>
 <td>timeout_ms</td><td>How long to wait in milliseconds before timing out the request.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Request (Version: 1) => [topics] timeout_ms validate_only
   topics => name num_partitions replication_factor [assignments] [configs]
     name => STRING
     num_partitions => INT32
     replication_factor => INT16
     assignments => partition_index [broker_ids]
       partition_index => INT32
       broker_ids => INT32
     configs => name value
       name => STRING
       value => NULLABLE_STRING
   timeout_ms => INT32
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>num_partitions</td><td>The number of partitions to create in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>replication_factor</td><td>The number of replicas to create for each partition in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>assignments</td><td>The manual partition assignment, or the empty array if we are using automatic assignment.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>broker_ids</td><td>The brokers to place the partition on.</td></tr>
 <tr>
 <td>configs</td><td>The custom topic configurations to set.</td></tr>
 <tr>
 <td>name</td><td>The configuration name.</td></tr>
 <tr>
 <td>value</td><td>The configuration value.</td></tr>
 <tr>
 <td>timeout_ms</td><td>How long to wait in milliseconds before timing out the request.</td></tr>
 <tr>
 <td>validate_only</td><td>If true, check that the topics can be created as specified, but don't create anything.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Request (Version: 2) => [topics] timeout_ms validate_only
   topics => name num_partitions replication_factor [assignments] [configs]
     name => STRING
     num_partitions => INT32
     replication_factor => INT16
     assignments => partition_index [broker_ids]
       partition_index => INT32
       broker_ids => INT32
     configs => name value
       name => STRING
       value => NULLABLE_STRING
   timeout_ms => INT32
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>num_partitions</td><td>The number of partitions to create in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>replication_factor</td><td>The number of replicas to create for each partition in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>assignments</td><td>The manual partition assignment, or the empty array if we are using automatic assignment.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>broker_ids</td><td>The brokers to place the partition on.</td></tr>
 <tr>
 <td>configs</td><td>The custom topic configurations to set.</td></tr>
 <tr>
 <td>name</td><td>The configuration name.</td></tr>
 <tr>
 <td>value</td><td>The configuration value.</td></tr>
 <tr>
 <td>timeout_ms</td><td>How long to wait in milliseconds before timing out the request.</td></tr>
 <tr>
 <td>validate_only</td><td>If true, check that the topics can be created as specified, but don't create anything.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Request (Version: 3) => [topics] timeout_ms validate_only
   topics => name num_partitions replication_factor [assignments] [configs]
     name => STRING
     num_partitions => INT32
     replication_factor => INT16
     assignments => partition_index [broker_ids]
       partition_index => INT32
       broker_ids => INT32
     configs => name value
       name => STRING
       value => NULLABLE_STRING
   timeout_ms => INT32
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>The topics to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>num_partitions</td><td>The number of partitions to create in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>replication_factor</td><td>The number of replicas to create for each partition in the topic, or -1 if we are specifying a manual partition assignment.</td></tr>
 <tr>
 <td>assignments</td><td>The manual partition assignment, or the empty array if we are using automatic assignment.</td></tr>
 <tr>
 <td>partition_index</td><td>The partition index.</td></tr>
 <tr>
 <td>broker_ids</td><td>The brokers to place the partition on.</td></tr>
 <tr>
 <td>configs</td><td>The custom topic configurations to set.</td></tr>
 <tr>
 <td>name</td><td>The configuration name.</td></tr>
 <tr>
 <td>value</td><td>The configuration value.</td></tr>
 <tr>
 <td>timeout_ms</td><td>How long to wait in milliseconds before timing out the request.</td></tr>
 <tr>
 <td>validate_only</td><td>If true, check that the topics can be created as specified, but don't create anything.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Response (Version: 0) => [topics]
   topics => name error_code
     name => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>Results for each topic we tried to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Response (Version: 1) => [topics]
   topics => name error_code error_message
     name => STRING
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>Results for each topic we tried to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Response (Version: 2) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name error_code error_message
     name => STRING
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>Results for each topic we tried to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateTopics Response (Version: 3) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => name error_code error_message
     name => STRING
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>topics</td><td>Results for each topic we tried to create.</td></tr>
 <tr>
 <td>name</td><td>The topic name.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DeleteTopics">DeleteTopics API (Key: 20):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Request (Version: 0) => [topic_names] timeout_ms
   topic_names => STRING
   timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_names</td><td>The names of the topics to delete</td></tr>
 <tr>
 <td>timeout_ms</td><td>The length of time in milliseconds to wait for the deletions to complete.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Request (Version: 1) => [topic_names] timeout_ms
   topic_names => STRING
   timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_names</td><td>The names of the topics to delete</td></tr>
 <tr>
 <td>timeout_ms</td><td>The length of time in milliseconds to wait for the deletions to complete.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Request (Version: 2) => [topic_names] timeout_ms
   topic_names => STRING
   timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_names</td><td>The names of the topics to delete</td></tr>
 <tr>
 <td>timeout_ms</td><td>The length of time in milliseconds to wait for the deletions to complete.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Request (Version: 3) => [topic_names] timeout_ms
   topic_names => STRING
   timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_names</td><td>The names of the topics to delete</td></tr>
 <tr>
 <td>timeout_ms</td><td>The length of time in milliseconds to wait for the deletions to complete.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Response (Version: 0) => [responses]
   responses => name error_code
     name => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>responses</td><td>The results for each topic we tried to delete.</td></tr>
 <tr>
 <td>name</td><td>The topic name</td></tr>
 <tr>
 <td>error_code</td><td>The deletion error, or 0 if the deletion succeeded.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Response (Version: 1) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => name error_code
     name => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>responses</td><td>The results for each topic we tried to delete.</td></tr>
 <tr>
 <td>name</td><td>The topic name</td></tr>
 <tr>
 <td>error_code</td><td>The deletion error, or 0 if the deletion succeeded.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Response (Version: 2) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => name error_code
     name => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>responses</td><td>The results for each topic we tried to delete.</td></tr>
 <tr>
 <td>name</td><td>The topic name</td></tr>
 <tr>
 <td>error_code</td><td>The deletion error, or 0 if the deletion succeeded.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteTopics Response (Version: 3) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => name error_code
     name => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>responses</td><td>The results for each topic we tried to delete.</td></tr>
 <tr>
 <td>name</td><td>The topic name</td></tr>
 <tr>
 <td>error_code</td><td>The deletion error, or 0 if the deletion succeeded.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DeleteRecords">DeleteRecords API (Key: 21):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteRecords Request (Version: 0) => [topics] timeout
   topics => topic [partitions]
     topic => STRING
     partitions => partition offset
       partition => INT32
       offset => INT64
   timeout => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>The offset before which the messages will be deleted. -1 means high-watermark for the partition.</td></tr>
 <tr>
 <td>timeout</td><td>The maximum time to await a response in ms.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteRecords Request (Version: 1) => [topics] timeout
   topics => topic [partitions]
     topic => STRING
     partitions => partition offset
       partition => INT32
       offset => INT64
   timeout => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>The offset before which the messages will be deleted. -1 means high-watermark for the partition.</td></tr>
 <tr>
 <td>timeout</td><td>The maximum time to await a response in ms.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteRecords Response (Version: 0) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition low_watermark error_code
       partition => INT32
       low_watermark => INT64
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>low_watermark</td><td>Smallest available offset of all live replicas</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteRecords Response (Version: 1) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition low_watermark error_code
       partition => INT32
       low_watermark => INT64
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>low_watermark</td><td>Smallest available offset of all live replicas</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_InitProducerId">InitProducerId API (Key: 22):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">InitProducerId Request (Version: 0) => transactional_id transaction_timeout_ms
   transactional_id => NULLABLE_STRING
   transaction_timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id, or null if the producer is not transactional.</td></tr>
 <tr>
 <td>transaction_timeout_ms</td><td>The time in ms to wait for before aborting idle transactions sent by this producer. This is only relevant if a TransactionalId has been defined.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">InitProducerId Request (Version: 1) => transactional_id transaction_timeout_ms
   transactional_id => NULLABLE_STRING
   transaction_timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id, or null if the producer is not transactional.</td></tr>
 <tr>
 <td>transaction_timeout_ms</td><td>The time in ms to wait for before aborting idle transactions sent by this producer. This is only relevant if a TransactionalId has been defined.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">InitProducerId Response (Version: 0) => throttle_time_ms error_code producer_id producer_epoch
   throttle_time_ms => INT32
   error_code => INT16
   producer_id => INT64
   producer_epoch => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>producer_id</td><td>The current producer id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>The current epoch associated with the producer id.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">InitProducerId Response (Version: 1) => throttle_time_ms error_code producer_id producer_epoch
   throttle_time_ms => INT32
   error_code => INT16
   producer_id => INT64
   producer_epoch => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>producer_id</td><td>The current producer id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>The current epoch associated with the producer id.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_OffsetForLeaderEpoch">OffsetForLeaderEpoch API (Key: 23):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Request (Version: 0) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => partition leader_epoch
       partition => INT32
       leader_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>An array of topics to get epochs for</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of partitions to get epochs for</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>leader_epoch</td><td>The epoch to lookup an offset for.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Request (Version: 1) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => partition leader_epoch
       partition => INT32
       leader_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>An array of topics to get epochs for</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of partitions to get epochs for</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>leader_epoch</td><td>The epoch to lookup an offset for.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Request (Version: 2) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch leader_epoch
       partition => INT32
       current_leader_epoch => INT32
       leader_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>An array of topics to get epochs for</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of partitions to get epochs for</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The epoch to lookup an offset for.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Request (Version: 3) => replica_id [topics]
   replica_id => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition current_leader_epoch leader_epoch
       partition => INT32
       current_leader_epoch => INT32
       leader_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>replica_id</td><td>Broker id of the follower. For normal consumers, use -1.</td></tr>
 <tr>
 <td>topics</td><td>An array of topics to get epochs for</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of partitions to get epochs for</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>current_leader_epoch</td><td>The current leader epoch, if provided, is used to fence consumers/replicas with old metadata. If the epoch provided by the client is larger than the current epoch known to the broker, then the UNKNOWN_LEADER_EPOCH error code will be returned. If the provided epoch is smaller, then the FENCED_LEADER_EPOCH error code will be returned.</td></tr>
 <tr>
 <td>leader_epoch</td><td>The epoch to lookup an offset for.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Response (Version: 0) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => error_code partition end_offset
       error_code => INT16
       partition => INT32
       end_offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>An array of topics for which we have leader offsets for some requested partition leader epoch</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of offsets by partition</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>end_offset</td><td>The end offset</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Response (Version: 1) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => error_code partition leader_epoch end_offset
       error_code => INT16
       partition => INT32
       leader_epoch => INT32
       end_offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>An array of topics for which we have leader offsets for some requested partition leader epoch</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of offsets by partition</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch</td></tr>
 <tr>
 <td>end_offset</td><td>The end offset</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Response (Version: 2) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => error_code partition leader_epoch end_offset
       error_code => INT16
       partition => INT32
       leader_epoch => INT32
       end_offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>An array of topics for which we have leader offsets for some requested partition leader epoch</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of offsets by partition</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch</td></tr>
 <tr>
 <td>end_offset</td><td>The end offset</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">OffsetForLeaderEpoch Response (Version: 3) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => error_code partition leader_epoch end_offset
       error_code => INT16
       partition => INT32
       leader_epoch => INT32
       end_offset => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>An array of topics for which we have leader offsets for some requested partition leader epoch</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>An array of offsets by partition</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch</td></tr>
 <tr>
 <td>end_offset</td><td>The end offset</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_AddPartitionsToTxn">AddPartitionsToTxn API (Key: 24):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AddPartitionsToTxn Request (Version: 0) => transactional_id producer_id producer_epoch [topics]
   transactional_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   topics => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>topics</td><td>The partitions to add to the transaction.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AddPartitionsToTxn Request (Version: 1) => transactional_id producer_id producer_epoch [topics]
   transactional_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   topics => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>topics</td><td>The partitions to add to the transaction.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AddPartitionsToTxn Response (Version: 0) => throttle_time_ms [errors]
   throttle_time_ms => INT32
   errors => topic [partition_errors]
     topic => STRING
     partition_errors => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>errors</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_errors</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AddPartitionsToTxn Response (Version: 1) => throttle_time_ms [errors]
   throttle_time_ms => INT32
   errors => topic [partition_errors]
     topic => STRING
     partition_errors => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>errors</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partition_errors</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_AddOffsetsToTxn">AddOffsetsToTxn API (Key: 25):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AddOffsetsToTxn Request (Version: 0) => transactional_id producer_id producer_epoch group_id
   transactional_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   group_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AddOffsetsToTxn Request (Version: 1) => transactional_id producer_id producer_epoch group_id
   transactional_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   group_id => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AddOffsetsToTxn Response (Version: 0) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AddOffsetsToTxn Response (Version: 1) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_EndTxn">EndTxn API (Key: 26):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">EndTxn Request (Version: 0) => transactional_id producer_id producer_epoch transaction_result
   transactional_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   transaction_result => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>transaction_result</td><td>The result of the transaction (0 = ABORT, 1 = COMMIT)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">EndTxn Request (Version: 1) => transactional_id producer_id producer_epoch transaction_result
   transactional_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   transaction_result => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>transaction_result</td><td>The result of the transaction (0 = ABORT, 1 = COMMIT)</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">EndTxn Response (Version: 0) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">EndTxn Response (Version: 1) => throttle_time_ms error_code
   throttle_time_ms => INT32
   error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_WriteTxnMarkers">WriteTxnMarkers API (Key: 27):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">WriteTxnMarkers Request (Version: 0) => [transaction_markers]
   transaction_markers => producer_id producer_epoch transaction_result [topics] coordinator_epoch
     producer_id => INT64
     producer_epoch => INT16
     transaction_result => BOOLEAN
     topics => topic [partitions]
       topic => STRING
       partitions => INT32
     coordinator_epoch => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transaction_markers</td><td>The transaction markers to be written.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>transaction_result</td><td>The result of the transaction to write to the partitions (false = ABORT, true = COMMIT).</td></tr>
 <tr>
 <td>topics</td><td>The partitions to write markers for.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>coordinator_epoch</td><td>Epoch associated with the transaction state partition hosted by this transaction coordinator</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">WriteTxnMarkers Response (Version: 0) => [transaction_markers]
   transaction_markers => producer_id [topics]
     producer_id => INT64
     topics => topic [partitions]
       topic => STRING
       partitions => partition error_code
         partition => INT32
         error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transaction_markers</td><td>Errors per partition from writing markers.</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>topics</td><td>Errors per partition from writing markers.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_TxnOffsetCommit">TxnOffsetCommit API (Key: 28):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">TxnOffsetCommit Request (Version: 0) => transactional_id group_id producer_id producer_epoch [topics]
   transactional_id => STRING
   group_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   topics => topic [partitions]
     topic => STRING
     partitions => partition offset metadata
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>topics</td><td>Topics to commit offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to commit offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">TxnOffsetCommit Request (Version: 1) => transactional_id group_id producer_id producer_epoch [topics]
   transactional_id => STRING
   group_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   topics => topic [partitions]
     topic => STRING
     partitions => partition offset metadata
       partition => INT32
       offset => INT64
       metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>topics</td><td>Topics to commit offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to commit offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">TxnOffsetCommit Request (Version: 2) => transactional_id group_id producer_id producer_epoch [topics]
   transactional_id => STRING
   group_id => STRING
   producer_id => INT64
   producer_epoch => INT16
   topics => topic [partitions]
     topic => STRING
     partitions => partition offset leader_epoch metadata
       partition => INT32
       offset => INT64
       leader_epoch => INT32
       metadata => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>transactional_id</td><td>The transactional id corresponding to the transaction.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>producer_id</td><td>Current producer id in use by the transactional id.</td></tr>
 <tr>
 <td>producer_epoch</td><td>Current epoch associated with the producer id.</td></tr>
 <tr>
 <td>topics</td><td>Topics to commit offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Partitions to commit offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>offset</td><td>Message offset to be committed</td></tr>
 <tr>
 <td>leader_epoch</td><td>The leader epoch, if provided is derived from the last consumed record. This is used by the consumer to check for log truncation and to ensure partition metadata is up to date following a group rebalance.</td></tr>
 <tr>
 <td>metadata</td><td>Any associated metadata the client wants to keep.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">TxnOffsetCommit Response (Version: 0) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>Responses by topic for committed offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Responses by partition for committed offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">TxnOffsetCommit Response (Version: 1) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>Responses by topic for committed offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Responses by partition for committed offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">TxnOffsetCommit Response (Version: 2) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>Responses by topic for committed offsets</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>Responses by partition for committed offsets</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DescribeAcls">DescribeAcls API (Key: 29):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeAcls Request (Version: 0) => resource_type resource_name principal host operation permission_type
   resource_type => INT8
   resource_name => NULLABLE_STRING
   principal => NULLABLE_STRING
   host => NULLABLE_STRING
   operation => INT8
   permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name filter</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal filter</td></tr>
 <tr>
 <td>host</td><td>The ACL host filter</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeAcls Request (Version: 1) => resource_type resource_name resource_pattern_type_filter principal host operation permission_type
   resource_type => INT8
   resource_name => NULLABLE_STRING
   resource_pattern_type_filter => INT8
   principal => NULLABLE_STRING
   host => NULLABLE_STRING
   operation => INT8
   permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name filter</td></tr>
 <tr>
 <td>resource_pattern_type_filter</td><td>The resource pattern type filter</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal filter</td></tr>
 <tr>
 <td>host</td><td>The ACL host filter</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeAcls Response (Version: 0) => throttle_time_ms error_code error_message [resources]
   throttle_time_ms => INT32
   error_code => INT16
   error_message => NULLABLE_STRING
   resources => resource_type resource_name [acls]
     resource_type => INT8
     resource_name => STRING
     acls => principal host operation permission_type
       principal => STRING
       host => STRING
       operation => INT8
       permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resources</td><td>The resources and their associated ACLs.</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name</td></tr>
 <tr>
 <td>acls</td><td>null</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal</td></tr>
 <tr>
 <td>host</td><td>The ACL host</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeAcls Response (Version: 1) => throttle_time_ms error_code error_message [resources]
   throttle_time_ms => INT32
   error_code => INT16
   error_message => NULLABLE_STRING
   resources => resource_type resource_name resource_pattern_type [acls]
     resource_type => INT8
     resource_name => STRING
     resource_pattern_type => INT8
     acls => principal host operation permission_type
       principal => STRING
       host => STRING
       operation => INT8
       permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resources</td><td>The resources and their associated ACLs.</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name</td></tr>
 <tr>
 <td>resource_pattern_type</td><td>The resource pattern type</td></tr>
 <tr>
 <td>acls</td><td>null</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal</td></tr>
 <tr>
 <td>host</td><td>The ACL host</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_CreateAcls">CreateAcls API (Key: 30):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreateAcls Request (Version: 0) => [creations]
   creations => resource_type resource_name principal host operation permission_type
     resource_type => INT8
     resource_name => STRING
     principal => STRING
     host => STRING
     operation => INT8
     permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>creations</td><td>null</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal</td></tr>
 <tr>
 <td>host</td><td>The ACL host</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateAcls Request (Version: 1) => [creations]
   creations => resource_type resource_name resource_pattern_type principal host operation permission_type
     resource_type => INT8
     resource_name => STRING
     resource_pattern_type => INT8
     principal => STRING
     host => STRING
     operation => INT8
     permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>creations</td><td>null</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name</td></tr>
 <tr>
 <td>resource_pattern_type</td><td>The resource pattern type</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal</td></tr>
 <tr>
 <td>host</td><td>The ACL host</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreateAcls Response (Version: 0) => throttle_time_ms [creation_responses]
   throttle_time_ms => INT32
   creation_responses => error_code error_message
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>creation_responses</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateAcls Response (Version: 1) => throttle_time_ms [creation_responses]
   throttle_time_ms => INT32
   creation_responses => error_code error_message
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>creation_responses</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DeleteAcls">DeleteAcls API (Key: 31):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteAcls Request (Version: 0) => [filters]
   filters => resource_type resource_name principal host operation permission_type
     resource_type => INT8
     resource_name => NULLABLE_STRING
     principal => NULLABLE_STRING
     host => NULLABLE_STRING
     operation => INT8
     permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>filters</td><td>null</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name filter</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal filter</td></tr>
 <tr>
 <td>host</td><td>The ACL host filter</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteAcls Request (Version: 1) => [filters]
   filters => resource_type resource_name resource_pattern_type_filter principal host operation permission_type
     resource_type => INT8
     resource_name => NULLABLE_STRING
     resource_pattern_type_filter => INT8
     principal => NULLABLE_STRING
     host => NULLABLE_STRING
     operation => INT8
     permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>filters</td><td>null</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name filter</td></tr>
 <tr>
 <td>resource_pattern_type_filter</td><td>The resource pattern type filter</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal filter</td></tr>
 <tr>
 <td>host</td><td>The ACL host filter</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteAcls Response (Version: 0) => throttle_time_ms [filter_responses]
   throttle_time_ms => INT32
   filter_responses => error_code error_message [matching_acls]
     error_code => INT16
     error_message => NULLABLE_STRING
     matching_acls => error_code error_message resource_type resource_name principal host operation permission_type
       error_code => INT16
       error_message => NULLABLE_STRING
       resource_type => INT8
       resource_name => STRING
       principal => STRING
       host => STRING
       operation => INT8
       permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>filter_responses</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>matching_acls</td><td>The matching ACLs</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal</td></tr>
 <tr>
 <td>host</td><td>The ACL host</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteAcls Response (Version: 1) => throttle_time_ms [filter_responses]
   throttle_time_ms => INT32
   filter_responses => error_code error_message [matching_acls]
     error_code => INT16
     error_message => NULLABLE_STRING
     matching_acls => error_code error_message resource_type resource_name resource_pattern_type principal host operation permission_type
       error_code => INT16
       error_message => NULLABLE_STRING
       resource_type => INT8
       resource_name => STRING
       resource_pattern_type => INT8
       principal => STRING
       host => STRING
       operation => INT8
       permission_type => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>filter_responses</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>matching_acls</td><td>The matching ACLs</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name</td></tr>
 <tr>
 <td>resource_pattern_type</td><td>The resource pattern type</td></tr>
 <tr>
 <td>principal</td><td>The ACL principal</td></tr>
 <tr>
 <td>host</td><td>The ACL host</td></tr>
 <tr>
 <td>operation</td><td>The ACL operation</td></tr>
 <tr>
 <td>permission_type</td><td>The ACL permission type</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DescribeConfigs">DescribeConfigs API (Key: 32):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeConfigs Request (Version: 0) => [resources]
   resources => resource_type resource_name [config_names]
     resource_type => INT8
     resource_name => STRING
     config_names => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resources</td><td>An array of config resources to be returned.</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_names</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeConfigs Request (Version: 1) => [resources] include_synonyms
   resources => resource_type resource_name [config_names]
     resource_type => INT8
     resource_name => STRING
     config_names => STRING
   include_synonyms => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resources</td><td>An array of config resources to be returned.</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_names</td><td>null</td></tr>
 <tr>
 <td>include_synonyms</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeConfigs Request (Version: 2) => [resources] include_synonyms
   resources => resource_type resource_name [config_names]
     resource_type => INT8
     resource_name => STRING
     config_names => STRING
   include_synonyms => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resources</td><td>An array of config resources to be returned.</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_names</td><td>null</td></tr>
 <tr>
 <td>include_synonyms</td><td>null</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeConfigs Response (Version: 0) => throttle_time_ms [resources]
   throttle_time_ms => INT32
   resources => error_code error_message resource_type resource_name [config_entries]
     error_code => INT16
     error_message => NULLABLE_STRING
     resource_type => INT8
     resource_name => STRING
     config_entries => config_name config_value read_only is_default is_sensitive
       config_name => STRING
       config_value => NULLABLE_STRING
       read_only => BOOLEAN
       is_default => BOOLEAN
       is_sensitive => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>resources</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_entries</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>null</td></tr>
 <tr>
 <td>config_value</td><td>null</td></tr>
 <tr>
 <td>read_only</td><td>null</td></tr>
 <tr>
 <td>is_default</td><td>null</td></tr>
 <tr>
 <td>is_sensitive</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeConfigs Response (Version: 1) => throttle_time_ms [resources]
   throttle_time_ms => INT32
   resources => error_code error_message resource_type resource_name [config_entries]
     error_code => INT16
     error_message => NULLABLE_STRING
     resource_type => INT8
     resource_name => STRING
     config_entries => config_name config_value read_only config_source is_sensitive [config_synonyms]
       config_name => STRING
       config_value => NULLABLE_STRING
       read_only => BOOLEAN
       config_source => INT8
       is_sensitive => BOOLEAN
       config_synonyms => config_name config_value config_source
         config_name => STRING
         config_value => NULLABLE_STRING
         config_source => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>resources</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_entries</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>null</td></tr>
 <tr>
 <td>config_value</td><td>null</td></tr>
 <tr>
 <td>read_only</td><td>null</td></tr>
 <tr>
 <td>config_source</td><td>null</td></tr>
 <tr>
 <td>is_sensitive</td><td>null</td></tr>
 <tr>
 <td>config_synonyms</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>null</td></tr>
 <tr>
 <td>config_value</td><td>null</td></tr>
 <tr>
 <td>config_source</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeConfigs Response (Version: 2) => throttle_time_ms [resources]
   throttle_time_ms => INT32
   resources => error_code error_message resource_type resource_name [config_entries]
     error_code => INT16
     error_message => NULLABLE_STRING
     resource_type => INT8
     resource_name => STRING
     config_entries => config_name config_value read_only config_source is_sensitive [config_synonyms]
       config_name => STRING
       config_value => NULLABLE_STRING
       read_only => BOOLEAN
       config_source => INT8
       is_sensitive => BOOLEAN
       config_synonyms => config_name config_value config_source
         config_name => STRING
         config_value => NULLABLE_STRING
         config_source => INT8
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>resources</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_entries</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>null</td></tr>
 <tr>
 <td>config_value</td><td>null</td></tr>
 <tr>
 <td>read_only</td><td>null</td></tr>
 <tr>
 <td>config_source</td><td>null</td></tr>
 <tr>
 <td>is_sensitive</td><td>null</td></tr>
 <tr>
 <td>config_synonyms</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>null</td></tr>
 <tr>
 <td>config_value</td><td>null</td></tr>
 <tr>
 <td>config_source</td><td>null</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_AlterConfigs">AlterConfigs API (Key: 33):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AlterConfigs Request (Version: 0) => [resources] validate_only
   resources => resource_type resource_name [config_entries]
     resource_type => INT8
     resource_name => STRING
     config_entries => config_name config_value
       config_name => STRING
       config_value => NULLABLE_STRING
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resources</td><td>An array of resources to update with the provided configs.</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_entries</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>Configuration name</td></tr>
 <tr>
 <td>config_value</td><td>Configuration value</td></tr>
 <tr>
 <td>validate_only</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AlterConfigs Request (Version: 1) => [resources] validate_only
   resources => resource_type resource_name [config_entries]
     resource_type => INT8
     resource_name => STRING
     config_entries => config_name config_value
       config_name => STRING
       config_value => NULLABLE_STRING
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resources</td><td>An array of resources to update with the provided configs.</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 <tr>
 <td>config_entries</td><td>null</td></tr>
 <tr>
 <td>config_name</td><td>Configuration name</td></tr>
 <tr>
 <td>config_value</td><td>Configuration value</td></tr>
 <tr>
 <td>validate_only</td><td>null</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AlterConfigs Response (Version: 0) => throttle_time_ms [resources]
   throttle_time_ms => INT32
   resources => error_code error_message resource_type resource_name
     error_code => INT16
     error_message => NULLABLE_STRING
     resource_type => INT8
     resource_name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>resources</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AlterConfigs Response (Version: 1) => throttle_time_ms [resources]
   throttle_time_ms => INT32
   resources => error_code error_message resource_type resource_name
     error_code => INT16
     error_message => NULLABLE_STRING
     resource_type => INT8
     resource_name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>resources</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 <tr>
 <td>resource_type</td><td>null</td></tr>
 <tr>
 <td>resource_name</td><td>null</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_AlterReplicaLogDirs">AlterReplicaLogDirs API (Key: 34):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AlterReplicaLogDirs Request (Version: 0) => [log_dirs]
   log_dirs => log_dir [topics]
     log_dir => STRING
     topics => topic [partitions]
       topic => STRING
       partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>log_dirs</td><td>null</td></tr>
 <tr>
 <td>log_dir</td><td>The absolute log directory path.</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>List of partition ids of the topic.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AlterReplicaLogDirs Request (Version: 1) => [log_dirs]
   log_dirs => log_dir [topics]
     log_dir => STRING
     topics => topic [partitions]
       topic => STRING
       partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>log_dirs</td><td>null</td></tr>
 <tr>
 <td>log_dir</td><td>The absolute log directory path.</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>List of partition ids of the topic.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">AlterReplicaLogDirs Response (Version: 0) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">AlterReplicaLogDirs Response (Version: 1) => throttle_time_ms [topics]
   throttle_time_ms => INT32
   topics => topic [partitions]
     topic => STRING
     partitions => partition error_code
       partition => INT32
       error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DescribeLogDirs">DescribeLogDirs API (Key: 35):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeLogDirs Request (Version: 0) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>List of partition ids of the topic.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeLogDirs Request (Version: 1) => [topics]
   topics => topic [partitions]
     topic => STRING
     partitions => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>List of partition ids of the topic.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeLogDirs Response (Version: 0) => throttle_time_ms [log_dirs]
   throttle_time_ms => INT32
   log_dirs => error_code log_dir [topics]
     error_code => INT16
     log_dir => STRING
     topics => topic [partitions]
       topic => STRING
       partitions => partition size offset_lag is_future
         partition => INT32
         size => INT64
         offset_lag => INT64
         is_future => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>log_dirs</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>log_dir</td><td>The absolute log directory path.</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>size</td><td>The size of the log segments of the partition in bytes.</td></tr>
 <tr>
 <td>offset_lag</td><td>The lag of the log's LEO w.r.t. partition's HW (if it is the current log for the partition) or current replica's LEO (if it is the future log for the partition)</td></tr>
 <tr>
 <td>is_future</td><td>True if this log is created by AlterReplicaLogDirsRequest and will replace the current log of the replica in the future.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeLogDirs Response (Version: 1) => throttle_time_ms [log_dirs]
   throttle_time_ms => INT32
   log_dirs => error_code log_dir [topics]
     error_code => INT16
     log_dir => STRING
     topics => topic [partitions]
       topic => STRING
       partitions => partition size offset_lag is_future
         partition => INT32
         size => INT64
         offset_lag => INT64
         is_future => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>log_dirs</td><td>null</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>log_dir</td><td>The absolute log directory path.</td></tr>
 <tr>
 <td>topics</td><td>null</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>partitions</td><td>null</td></tr>
 <tr>
 <td>partition</td><td>Topic partition id</td></tr>
 <tr>
 <td>size</td><td>The size of the log segments of the partition in bytes.</td></tr>
 <tr>
 <td>offset_lag</td><td>The lag of the log's LEO w.r.t. partition's HW (if it is the current log for the partition) or current replica's LEO (if it is the future log for the partition)</td></tr>
 <tr>
 <td>is_future</td><td>True if this log is created by AlterReplicaLogDirsRequest and will replace the current log of the replica in the future.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_SaslAuthenticate">SaslAuthenticate API (Key: 36):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">SaslAuthenticate Request (Version: 0) => auth_bytes
   auth_bytes => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>auth_bytes</td><td>The SASL authentication bytes from the client, as defined by the SASL mechanism.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SaslAuthenticate Request (Version: 1) => auth_bytes
   auth_bytes => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>auth_bytes</td><td>The SASL authentication bytes from the client, as defined by the SASL mechanism.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">SaslAuthenticate Response (Version: 0) => error_code error_message auth_bytes
   error_code => INT16
   error_message => NULLABLE_STRING
   auth_bytes => BYTES
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 <tr>
 <td>auth_bytes</td><td>The SASL authentication bytes from the server, as defined by the SASL mechanism.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">SaslAuthenticate Response (Version: 1) => error_code error_message auth_bytes session_lifetime_ms
   error_code => INT16
   error_message => NULLABLE_STRING
   auth_bytes => BYTES
   session_lifetime_ms => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>The error code, or 0 if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The error message, or null if there was no error.</td></tr>
 <tr>
 <td>auth_bytes</td><td>The SASL authentication bytes from the server, as defined by the SASL mechanism.</td></tr>
 <tr>
 <td>session_lifetime_ms</td><td>The SASL authentication bytes from the server, as defined by the SASL mechanism.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_CreatePartitions">CreatePartitions API (Key: 37):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreatePartitions Request (Version: 0) => [topic_partitions] timeout validate_only
   topic_partitions => topic new_partitions
     topic => STRING
     new_partitions => count [assignment]
       count => INT32
       assignment => ARRAY(INT32)
   timeout => INT32
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_partitions</td><td>List of topic and the corresponding new partitions.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>new_partitions</td><td>null</td></tr>
 <tr>
 <td>count</td><td>The new partition count.</td></tr>
 <tr>
 <td>assignment</td><td>The assigned brokers.</td></tr>
 <tr>
 <td>timeout</td><td>The time in ms to wait for the partitions to be created.</td></tr>
 <tr>
 <td>validate_only</td><td>If true then validate the request, but don't actually increase the number of partitions.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreatePartitions Request (Version: 1) => [topic_partitions] timeout validate_only
   topic_partitions => topic new_partitions
     topic => STRING
     new_partitions => count [assignment]
       count => INT32
       assignment => ARRAY(INT32)
   timeout => INT32
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_partitions</td><td>List of topic and the corresponding new partitions.</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>new_partitions</td><td>null</td></tr>
 <tr>
 <td>count</td><td>The new partition count.</td></tr>
 <tr>
 <td>assignment</td><td>The assigned brokers.</td></tr>
 <tr>
 <td>timeout</td><td>The time in ms to wait for the partitions to be created.</td></tr>
 <tr>
 <td>validate_only</td><td>If true then validate the request, but don't actually increase the number of partitions.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreatePartitions Response (Version: 0) => throttle_time_ms [topic_errors]
   throttle_time_ms => INT32
   topic_errors => topic error_code error_message
     topic => STRING
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topic_errors</td><td>Per topic results for the create partitions request</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreatePartitions Response (Version: 1) => throttle_time_ms [topic_errors]
   throttle_time_ms => INT32
   topic_errors => topic error_code error_message
     topic => STRING
     error_code => INT16
     error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>topic_errors</td><td>Per topic results for the create partitions request</td></tr>
 <tr>
 <td>topic</td><td>Name of topic</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>error_message</td><td>Response error message</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_CreateDelegationToken">CreateDelegationToken API (Key: 38):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreateDelegationToken Request (Version: 0) => [renewers] max_life_time
   renewers => principal_type name
     principal_type => STRING
     name => STRING
   max_life_time => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>renewers</td><td>An array of token renewers. Renewer is an Kafka PrincipalType and name string, who is allowed to renew this token before the max lifetime expires.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>max_life_time</td><td>Max lifetime period for token in milli seconds. if value is -1, then max lifetime  will default to a server side config value.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateDelegationToken Request (Version: 1) => [renewers] max_life_time
   renewers => principal_type name
     principal_type => STRING
     name => STRING
   max_life_time => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>renewers</td><td>An array of token renewers. Renewer is an Kafka PrincipalType and name string, who is allowed to renew this token before the max lifetime expires.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>max_life_time</td><td>Max lifetime period for token in milli seconds. if value is -1, then max lifetime  will default to a server side config value.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">CreateDelegationToken Response (Version: 0) => error_code owner issue_timestamp expiry_timestamp max_timestamp token_id hmac throttle_time_ms
   error_code => INT16
   owner => principal_type name
     principal_type => STRING
     name => STRING
   issue_timestamp => INT64
   expiry_timestamp => INT64
   max_timestamp => INT64
   token_id => STRING
   hmac => BYTES
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>owner</td><td>token owner.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>issue_timestamp</td><td>timestamp (in msec) when this token was generated.</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires.</td></tr>
 <tr>
 <td>max_timestamp</td><td>max life time of this token.</td></tr>
 <tr>
 <td>token_id</td><td>UUID to ensure uniqueness.</td></tr>
 <tr>
 <td>hmac</td><td>HMAC of the delegation token.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">CreateDelegationToken Response (Version: 1) => error_code owner issue_timestamp expiry_timestamp max_timestamp token_id hmac throttle_time_ms
   error_code => INT16
   owner => principal_type name
     principal_type => STRING
     name => STRING
   issue_timestamp => INT64
   expiry_timestamp => INT64
   max_timestamp => INT64
   token_id => STRING
   hmac => BYTES
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>owner</td><td>token owner.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>issue_timestamp</td><td>timestamp (in msec) when this token was generated.</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires.</td></tr>
 <tr>
 <td>max_timestamp</td><td>max life time of this token.</td></tr>
 <tr>
 <td>token_id</td><td>UUID to ensure uniqueness.</td></tr>
 <tr>
 <td>hmac</td><td>HMAC of the delegation token.</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_RenewDelegationToken">RenewDelegationToken API (Key: 39):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">RenewDelegationToken Request (Version: 0) => hmac renew_time_period
   hmac => BYTES
   renew_time_period => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>hmac</td><td>HMAC of the delegation token to be renewed.</td></tr>
 <tr>
 <td>renew_time_period</td><td>Renew time period in milli seconds.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">RenewDelegationToken Request (Version: 1) => hmac renew_time_period
   hmac => BYTES
   renew_time_period => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>hmac</td><td>HMAC of the delegation token to be renewed.</td></tr>
 <tr>
 <td>renew_time_period</td><td>Renew time period in milli seconds.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">RenewDelegationToken Response (Version: 0) => error_code expiry_timestamp throttle_time_ms
   error_code => INT16
   expiry_timestamp => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires..</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">RenewDelegationToken Response (Version: 1) => error_code expiry_timestamp throttle_time_ms
   error_code => INT16
   expiry_timestamp => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires..</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_ExpireDelegationToken">ExpireDelegationToken API (Key: 40):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ExpireDelegationToken Request (Version: 0) => hmac expiry_time_period
   hmac => BYTES
   expiry_time_period => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>hmac</td><td>HMAC of the delegation token to be expired.</td></tr>
 <tr>
 <td>expiry_time_period</td><td>expiry time period in milli seconds.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ExpireDelegationToken Request (Version: 1) => hmac expiry_time_period
   hmac => BYTES
   expiry_time_period => INT64
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>hmac</td><td>HMAC of the delegation token to be expired.</td></tr>
 <tr>
 <td>expiry_time_period</td><td>expiry time period in milli seconds.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ExpireDelegationToken Response (Version: 0) => error_code expiry_timestamp throttle_time_ms
   error_code => INT16
   expiry_timestamp => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires..</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">ExpireDelegationToken Response (Version: 1) => error_code expiry_timestamp throttle_time_ms
   error_code => INT16
   expiry_timestamp => INT64
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires..</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DescribeDelegationToken">DescribeDelegationToken API (Key: 41):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeDelegationToken Request (Version: 0) => [owners]
   owners => principal_type name
     principal_type => STRING
     name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>owners</td><td>An array of token owners.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeDelegationToken Request (Version: 1) => [owners]
   owners => principal_type name
     principal_type => STRING
     name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>owners</td><td>An array of token owners.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DescribeDelegationToken Response (Version: 0) => error_code [token_details] throttle_time_ms
   error_code => INT16
   token_details => owner issue_timestamp expiry_timestamp max_timestamp token_id hmac [renewers]
     owner => principal_type name
       principal_type => STRING
       name => STRING
     issue_timestamp => INT64
     expiry_timestamp => INT64
     max_timestamp => INT64
     token_id => STRING
     hmac => BYTES
     renewers => principal_type name
       principal_type => STRING
       name => STRING
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>token_details</td><td>null</td></tr>
 <tr>
 <td>owner</td><td>token owner.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>issue_timestamp</td><td>timestamp (in msec) when this token was generated.</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires.</td></tr>
 <tr>
 <td>max_timestamp</td><td>max life time of this token.</td></tr>
 <tr>
 <td>token_id</td><td>UUID to ensure uniqueness.</td></tr>
 <tr>
 <td>hmac</td><td>HMAC of the delegation token to be expired.</td></tr>
 <tr>
 <td>renewers</td><td>An array of token renewers. Renewer is an Kafka PrincipalType and name string, who is allowed to renew this token before the max lifetime expires.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DescribeDelegationToken Response (Version: 1) => error_code [token_details] throttle_time_ms
   error_code => INT16
   token_details => owner issue_timestamp expiry_timestamp max_timestamp token_id hmac [renewers]
     owner => principal_type name
       principal_type => STRING
       name => STRING
     issue_timestamp => INT64
     expiry_timestamp => INT64
     max_timestamp => INT64
     token_id => STRING
     hmac => BYTES
     renewers => principal_type name
       principal_type => STRING
       name => STRING
   throttle_time_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>error_code</td><td>Response error code</td></tr>
 <tr>
 <td>token_details</td><td>null</td></tr>
 <tr>
 <td>owner</td><td>token owner.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>issue_timestamp</td><td>timestamp (in msec) when this token was generated.</td></tr>
 <tr>
 <td>expiry_timestamp</td><td>timestamp (in msec) at which this token expires.</td></tr>
 <tr>
 <td>max_timestamp</td><td>max life time of this token.</td></tr>
 <tr>
 <td>token_id</td><td>UUID to ensure uniqueness.</td></tr>
 <tr>
 <td>hmac</td><td>HMAC of the delegation token to be expired.</td></tr>
 <tr>
 <td>renewers</td><td>An array of token renewers. Renewer is an Kafka PrincipalType and name string, who is allowed to renew this token before the max lifetime expires.</td></tr>
 <tr>
 <td>principal_type</td><td>principalType of the Kafka principal</td></tr>
 <tr>
 <td>name</td><td>name of the Kafka principal</td></tr>
 <tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_DeleteGroups">DeleteGroups API (Key: 42):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteGroups Request (Version: 0) => [groups]
   groups => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>An array of groups to be deleted.</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteGroups Request (Version: 1) => [groups]
   groups => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>groups</td><td>An array of groups to be deleted.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">DeleteGroups Response (Version: 0) => throttle_time_ms [group_error_codes]
   throttle_time_ms => INT32
   group_error_codes => group_id error_code
     group_id => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>group_error_codes</td><td>An array of per group error codes.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <p><pre class="line-numbers"><code class="language-java">DeleteGroups Response (Version: 1) => throttle_time_ms [group_error_codes]
   throttle_time_ms => INT32
   group_error_codes => group_id error_code
     group_id => STRING
     error_code => INT16
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to quota violation (Zero if the request did not violate any quota)</td></tr>
 <tr>
 <td>group_error_codes</td><td>An array of per group error codes.</td></tr>
 <tr>
 <td>group_id</td><td>The unique group identifier</td></tr>
 <tr>
 <td>error_code</td><td>Response error code</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_ElectPreferredLeaders">ElectPreferredLeaders API (Key: 43):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ElectPreferredLeaders Request (Version: 0) => [topic_partitions] timeout_ms
   topic_partitions => topic [partition_id]
     topic => STRING
     partition_id => INT32
   timeout_ms => INT32
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>topic_partitions</td><td>The topic partitions to elect the preferred leader of.</td></tr>
 <tr>
 <td>topic</td><td>The name of a topic.</td></tr>
 <tr>
 <td>partition_id</td><td>The partitions of this topic whose preferred leader should be elected</td></tr>
 <tr>
 <td>timeout_ms</td><td>The time in ms to wait for the election to complete.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">ElectPreferredLeaders Response (Version: 0) => throttle_time_ms [replica_election_results]
   throttle_time_ms => INT32
   replica_election_results => topic [partition_result]
     topic => STRING
     partition_result => partition_id error_code error_message
       partition_id => INT32
       error_code => INT16
       error_message => NULLABLE_STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>The duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>replica_election_results</td><td>The election results, or an empty array if the requester did not have permission and the request asks for all partitions.</td></tr>
 <tr>
 <td>topic</td><td>The topic name</td></tr>
 <tr>
 <td>partition_result</td><td>The results for each partition</td></tr>
 <tr>
 <td>partition_id</td><td>The partition id</td></tr>
 <tr>
 <td>error_code</td><td>The result error, or zero if there was no error.</td></tr>
 <tr>
 <td>error_message</td><td>The result message, or null if there was no error.</td></tr>
 </table>
 </p>
 <h5><a name="The_Messages_IncrementalAlterConfigs">IncrementalAlterConfigs API (Key: 44):</a></h5>

 <b>Requests:</b><br>
 <p><pre class="line-numbers"><code class="language-java">IncrementalAlterConfigs Request (Version: 0) => [resources] validate_only
   resources => resource_type resource_name [configs]
     resource_type => INT8
     resource_name => STRING
     configs => name config_operation value
       name => STRING
       config_operation => INT8
       value => NULLABLE_STRING
   validate_only => BOOLEAN
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>resources</td><td>The incremental updates for each resource.</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type.</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name.</td></tr>
 <tr>
 <td>configs</td><td>The configurations.</td></tr>
 <tr>
 <td>name</td><td>The configuration key name.</td></tr>
 <tr>
 <td>config_operation</td><td>The type (Set, Delete, Append, Subtract) of operation.</td></tr>
 <tr>
 <td>value</td><td>The value to set for the configuration key.</td></tr>
 <tr>
 <td>validate_only</td><td>True if we should validate the request, but not change the configurations.</td></tr>
 </table>
 </p>
 <b>Responses:</b><br>
 <p><pre class="line-numbers"><code class="language-java">IncrementalAlterConfigs Response (Version: 0) => throttle_time_ms [responses]
   throttle_time_ms => INT32
   responses => error_code error_message resource_type resource_name
     error_code => INT16
     error_message => NULLABLE_STRING
     resource_type => INT8
     resource_name => STRING
 </code></pre><table class="data-table"><tbody>
 <tr><th>Field</th>
 <th>Description</th>
 </tr><tr>
 <td>throttle_time_ms</td><td>Duration in milliseconds for which the request was throttled due to a quota violation, or zero if the request did not violate any quota.</td></tr>
 <tr>
 <td>responses</td><td>The responses for each resource.</td></tr>
 <tr>
 <td>error_code</td><td>The resource error code.</td></tr>
 <tr>
 <td>error_message</td><td>The resource error message, or null if there was no error.</td></tr>
 <tr>
 <td>resource_type</td><td>The resource type.</td></tr>
 <tr>
 <td>resource_name</td><td>The resource name.</td></tr>
 </table>
 </p>