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| <h2 title="Class RoundRobinManualPartitioner" class="title">Class RoundRobinManualPartitioner</h2> |
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| <li>org.apache.storm.kafka.spout.subscription.RoundRobinManualPartitioner</li> |
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| <pre>public class <span class="typeNameLabel">RoundRobinManualPartitioner</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a> |
| implements <a href="../../../../../../org/apache/storm/kafka/spout/subscription/ManualPartitioner.html" title="interface in org.apache.storm.kafka.spout.subscription">ManualPartitioner</a></pre> |
| <div class="block"><p>Assign partitions in a round robin fashion for all spouts, not just the ones that are alive. Because the parallelism of the spouts does not typically change while running this makes the assignments more stable in the face of crashing spouts. <p/> Round Robin means that first spout of N spouts will get the first partition, and the N+1th partition… The second spout will get the second partition and N+2th partition etc.</p></div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/storm/kafka/spout/subscription/RoundRobinManualPartitioner.html#RoundRobinManualPartitioner--">RoundRobinManualPartitioner</a></span>()</code> </td> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><org.apache.kafka.common.TopicPartition></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/storm/kafka/spout/subscription/RoundRobinManualPartitioner.html#getPartitionsForThisTask-java.util.List-org.apache.storm.task.TopologyContext-">getPartitionsForThisTask</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><org.apache.kafka.common.TopicPartition> allPartitionsSorted, |
| <a href="../../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context)</code> |
| <div class="block">Filter the list of all partitions handled by this set of spouts to get only the partitions assigned to this task.</div> |
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| <h4>RoundRobinManualPartitioner</h4> |
| <pre>public RoundRobinManualPartitioner()</pre> |
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| <h4>getPartitionsForThisTask</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><org.apache.kafka.common.TopicPartition> getPartitionsForThisTask(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><org.apache.kafka.common.TopicPartition> allPartitionsSorted, |
| <a href="../../../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/storm/kafka/spout/subscription/ManualPartitioner.html#getPartitionsForThisTask-java.util.List-org.apache.storm.task.TopologyContext-">ManualPartitioner</a></code></span></div> |
| <div class="block"><p>Filter the list of all partitions handled by this set of spouts to get only the partitions assigned to this task.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/storm/kafka/spout/subscription/ManualPartitioner.html#getPartitionsForThisTask-java.util.List-org.apache.storm.task.TopologyContext-">getPartitionsForThisTask</a></code> in interface <code><a href="../../../../../../org/apache/storm/kafka/spout/subscription/ManualPartitioner.html" title="interface in org.apache.storm.kafka.spout.subscription">ManualPartitioner</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>allPartitionsSorted</code> - all of the partitions that the set of spouts want to subscribe to in a strict ordering that is consistent across tasks</dd> |
| <dd><code>context</code> - the context of the topology</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the subset of the partitions that this spout task should handle.</dd> |
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