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| <h2 title="Class NewPartitions" class="title">Class NewPartitions</h2> |
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| <pre><a href="../../../../../org/apache/kafka/common/annotation/InterfaceStability.Evolving.html" title="annotation in org.apache.kafka.common.annotation">@Evolving</a> |
| public class <span class="typeNameLabel">NewPartitions</span> |
| extends java.lang.Object</pre> |
| <div class="block">Describes new partitions for a particular topic in a call to <a href="../../../../../org/apache/kafka/clients/admin/AdminClient.html#createPartitions-java.util.Map-"><code>AdminClient.createPartitions(Map)</code></a>. |
| |
| The API of this class is evolving, see <a href="../../../../../org/apache/kafka/clients/admin/AdminClient.html" title="class in org.apache.kafka.clients.admin"><code>AdminClient</code></a> for details.</div> |
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| <td class="colFirst"><code>java.util.List<java.util.List<java.lang.Integer>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html#assignments--">assignments</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">The replica assignments for the new partitions, or null if the assignment will be done by the controller.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html" title="class in org.apache.kafka.clients.admin">NewPartitions</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html#increaseTo-int-">increaseTo</a></span>​(int totalCount)</code></th> |
| <td class="colLast"> |
| <div class="block">Increase the partition count for a topic to the given <code>totalCount</code>.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html" title="class in org.apache.kafka.clients.admin">NewPartitions</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html#increaseTo-int-java.util.List-">increaseTo</a></span>​(int totalCount, |
| java.util.List<java.util.List<java.lang.Integer>> newAssignments)</code></th> |
| <td class="colLast"> |
| <div class="block">Increase the partition count for a topic to the given <code>totalCount</code> |
| assigning the new partitions according to the given <code>newAssignments</code>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>java.lang.String</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html#toString--">toString</a></span>​()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html#totalCount--">totalCount</a></span>​()</code></th> |
| <td class="colLast"> |
| <div class="block">The total number of partitions after the operation succeeds.</div> |
| </td> |
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| <h4>increaseTo</h4> |
| <pre>public static <a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html" title="class in org.apache.kafka.clients.admin">NewPartitions</a> increaseTo​(int totalCount)</pre> |
| <div class="block">Increase the partition count for a topic to the given <code>totalCount</code>. |
| The assignment of new replicas to brokers will be decided by the broker.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>totalCount</code> - The total number of partitions after the operation succeeds.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="increaseTo-int-java.util.List-"> |
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| <h4>increaseTo</h4> |
| <pre>public static <a href="../../../../../org/apache/kafka/clients/admin/NewPartitions.html" title="class in org.apache.kafka.clients.admin">NewPartitions</a> increaseTo​(int totalCount, |
| java.util.List<java.util.List<java.lang.Integer>> newAssignments)</pre> |
| <div class="block"><p>Increase the partition count for a topic to the given <code>totalCount</code> |
| assigning the new partitions according to the given <code>newAssignments</code>. |
| The length of the given <code>newAssignments</code> should equal <code>totalCount - oldCount</code>, since |
| the assignment of existing partitions are not changed. |
| Each inner list of <code>newAssignments</code> should have a length equal to |
| the topic's replication factor. |
| The first broker id in each inner list is the "preferred replica".</p> |
| |
| <p>For example, suppose a topic currently has a replication factor of 2, and |
| has 3 partitions. The number of partitions can be increased to 6 using a |
| <code>NewPartition</code> constructed like this:</p> |
| |
| <pre><code> |
| NewPartitions.increaseTo(6, asList(asList(1, 2), |
| asList(2, 3), |
| asList(3, 1))) |
| </code></pre> |
| <p>In this example partition 3's preferred leader will be broker 1, partition 4's preferred leader will be |
| broker 2 and partition 5's preferred leader will be broker 3.</p></div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>totalCount</code> - The total number of partitions after the operation succeeds.</dd> |
| <dd><code>newAssignments</code> - The replica assignments for the new partitions.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="totalCount--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>totalCount</h4> |
| <pre>public int totalCount​()</pre> |
| <div class="block">The total number of partitions after the operation succeeds.</div> |
| </li> |
| </ul> |
| <a name="assignments--"> |
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| </a> |
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| <li class="blockList"> |
| <h4>assignments</h4> |
| <pre>public java.util.List<java.util.List<java.lang.Integer>> assignments​()</pre> |
| <div class="block">The replica assignments for the new partitions, or null if the assignment will be done by the controller.</div> |
| </li> |
| </ul> |
| <a name="toString--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>toString</h4> |
| <pre>public java.lang.String toString​()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>toString</code> in class <code>java.lang.Object</code></dd> |
| </dl> |
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