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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.kafka.spout.subscription</a></div> |
| <h1 title="Class RoundRobinManualPartitioner" class="title">Class RoundRobinManualPartitioner</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance">org.apache.storm.kafka.spout.subscription.RoundRobinManualPartitioner</div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code>, <code><a href="ManualPartitioner.html" title="interface in org.apache.storm.kafka.spout.subscription">ManualPartitioner</a></code></dd> |
| </dl> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">RoundRobinManualPartitioner</span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a> |
| implements <a href="ManualPartitioner.html" title="interface in org.apache.storm.kafka.spout.subscription">ManualPartitioner</a></span></div> |
| <div class="block">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.</div> |
| <dl class="notes"> |
| <dt>See Also:</dt> |
| <dd> |
| <ul class="see-list"> |
| <li><a href="../../../../../../serialized-form.html#org.apache.storm.kafka.spout.subscription.RoundRobinManualPartitioner">Serialized Form</a></li> |
| </ul> |
| </dd> |
| </dl> |
| </section> |
| <section class="summary"> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <h2>Constructor Summary</h2> |
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| <div class="table-header col-first">Constructor</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E()" class="member-name-link">RoundRobinManualPartitioner</a>()</code></div> |
| <div class="col-last even-row-color"> </div> |
| </div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Set.html" title="class or interface in java.util" class="external-link">Set</a><org.apache.kafka.common.TopicPartition></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#getPartitionsForThisTask(java.util.List,org.apache.storm.task.TopologyContext)" class="member-name-link">getPartitionsForThisTask</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><org.apache.kafka.common.TopicPartition> allPartitionsSorted, |
| <a href="../../../task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <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> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
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| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <li> |
| <section class="constructor-details" id="constructor-detail"> |
| <h2>Constructor Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="<init>()"> |
| <h3>RoundRobinManualPartitioner</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="element-name">RoundRobinManualPartitioner</span>()</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="getPartitionsForThisTask(java.util.List,org.apache.storm.task.TopologyContext)"> |
| <h3>getPartitionsForThisTask</h3> |
| <div class="member-signature"><span class="modifiers">public</span> <span class="return-type"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/Set.html" title="class or interface in java.util" class="external-link">Set</a><org.apache.kafka.common.TopicPartition></span> <span class="element-name">getPartitionsForThisTask</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a><org.apache.kafka.common.TopicPartition> allPartitionsSorted, |
| <a href="../../../task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context)</span></div> |
| <div class="block"><span class="descfrm-type-label">Description copied from interface: <code><a href="ManualPartitioner.html#getPartitionsForThisTask(java.util.List,org.apache.storm.task.TopologyContext)">ManualPartitioner</a></code></span></div> |
| <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> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="ManualPartitioner.html#getPartitionsForThisTask(java.util.List,org.apache.storm.task.TopologyContext)">getPartitionsForThisTask</a></code> in interface <code><a href="ManualPartitioner.html" title="interface in org.apache.storm.kafka.spout.subscription">ManualPartitioner</a></code></dd> |
| <dt>Parameters:</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>Returns:</dt> |
| <dd>the subset of the partitions that this spout task should handle.</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
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