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| <pre>public interface <span class="typeNameLabel">OffsetCommitCallback</span></pre> |
| <div class="block">A callback interface that the user can implement to trigger custom actions when a commit request completes. The callback |
| may be executed in any thread calling <a href="../../../../../org/apache/kafka/clients/consumer/Consumer.html#poll-long-"><code>poll()</code></a>.</div> |
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| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/kafka/clients/consumer/OffsetCommitCallback.html#onComplete-java.util.Map-java.lang.Exception-">onComplete</a></span>​(java.util.Map<<a href="../../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>,<a href="../../../../../org/apache/kafka/clients/consumer/OffsetAndMetadata.html" title="class in org.apache.kafka.clients.consumer">OffsetAndMetadata</a>> offsets, |
| java.lang.Exception exception)</code></th> |
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| <div class="block">A callback method the user can implement to provide asynchronous handling of commit request completion.</div> |
| </td> |
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| <h4>onComplete</h4> |
| <pre>void onComplete​(java.util.Map<<a href="../../../../../org/apache/kafka/common/TopicPartition.html" title="class in org.apache.kafka.common">TopicPartition</a>,<a href="../../../../../org/apache/kafka/clients/consumer/OffsetAndMetadata.html" title="class in org.apache.kafka.clients.consumer">OffsetAndMetadata</a>> offsets, |
| java.lang.Exception exception)</pre> |
| <div class="block">A callback method the user can implement to provide asynchronous handling of commit request completion. |
| This method will be called when the commit request sent to the server has been acknowledged.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>offsets</code> - A map of the offsets and associated metadata that this callback applies to</dd> |
| <dd><code>exception</code> - The exception thrown during processing of the request, or null if the commit completed successfully</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../org/apache/kafka/clients/consumer/CommitFailedException.html" title="class in org.apache.kafka.clients.consumer">CommitFailedException</a></code> - if the commit failed and cannot be retried. |
| This can only occur if you are using automatic group management with <a href="../../../../../org/apache/kafka/clients/consumer/KafkaConsumer.html#subscribe-java.util.Collection-"><code>KafkaConsumer.subscribe(Collection)</code></a>, |
| or if there is an active group with the same groupId which is using group management.</dd> |
| <dd><code><a href="../../../../../org/apache/kafka/common/errors/WakeupException.html" title="class in org.apache.kafka.common.errors">WakeupException</a></code> - if <a href="../../../../../org/apache/kafka/clients/consumer/KafkaConsumer.html#wakeup--"><code>KafkaConsumer.wakeup()</code></a> is called before or while this |
| function is called</dd> |
| <dd><code><a href="../../../../../org/apache/kafka/common/errors/InterruptException.html" title="class in org.apache.kafka.common.errors">InterruptException</a></code> - if the calling thread is interrupted before or while |
| this function is called</dd> |
| <dd><code><a href="../../../../../org/apache/kafka/common/errors/AuthorizationException.html" title="class in org.apache.kafka.common.errors">AuthorizationException</a></code> - if not authorized to the topic or to the |
| configured groupId. See the exception for more details</dd> |
| <dd><code><a href="../../../../../org/apache/kafka/common/KafkaException.html" title="class in org.apache.kafka.common">KafkaException</a></code> - for any other unrecoverable errors (e.g. if offset metadata |
| is too large or if the committed offset is invalid).</dd> |
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