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| <h2 title="Class KeyedFairBolt" class="title">Class KeyedFairBolt</h2> |
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| <ul class="inheritance"> |
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| <li>org.apache.storm.drpc.KeyedFairBolt</li> |
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| <pre>public class <span class="typeNameLabel">KeyedFairBolt</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/topology/IRichBolt.html" title="interface in org.apache.storm.topology">IRichBolt</a>, <a href="../../../../org/apache/storm/coordination/CoordinatedBolt.FinishedCallback.html" title="interface in org.apache.storm.coordination">CoordinatedBolt.FinishedCallback</a></pre> |
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| <th class="colOne" scope="col">Constructor and Description</th> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#KeyedFairBolt-org.apache.storm.topology.IBasicBolt-">KeyedFairBolt</a></span>(<a href="../../../../org/apache/storm/topology/IBasicBolt.html" title="interface in org.apache.storm.topology">IBasicBolt</a> delegate)</code> </td> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#cleanup--">cleanup</a></span>()</code> |
| <div class="block">Called when an IBolt is going to be shutdown.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-">declareOutputFields</a></span>(<a href="../../../../org/apache/storm/topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</code> |
| <div class="block">Declare the output schema for all the streams of this topology.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#execute-org.apache.storm.tuple.Tuple-">execute</a></span>(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> input)</code> |
| <div class="block">Process a single tuple of input.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#finishedId-java.lang.Object-">finishedId</a></span>(<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> id)</code> </td> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<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>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#getComponentConfiguration--">getComponentConfiguration</a></span>()</code> |
| <div class="block">Declare configuration specific to this component.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/drpc/KeyedFairBolt.html#prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-">prepare</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<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>> topoConf, |
| <a href="../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context, |
| <a href="../../../../org/apache/storm/task/OutputCollector.html" title="class in org.apache.storm.task">OutputCollector</a> collector)</code> |
| <div class="block">Called when a task for this component is initialized within a worker on the cluster.</div> |
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| </ul> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <h3>Constructor Detail</h3> |
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| <h4>KeyedFairBolt</h4> |
| <pre>public KeyedFairBolt(<a href="../../../../org/apache/storm/topology/IRichBolt.html" title="interface in org.apache.storm.topology">IRichBolt</a> delegate)</pre> |
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| <h4>KeyedFairBolt</h4> |
| <pre>public KeyedFairBolt(<a href="../../../../org/apache/storm/topology/IBasicBolt.html" title="interface in org.apache.storm.topology">IBasicBolt</a> delegate)</pre> |
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| <h3>Method Detail</h3> |
| <a name="prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-"> |
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| <h4>prepare</h4> |
| <pre>public void prepare(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<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>> topoConf, |
| <a href="../../../../org/apache/storm/task/TopologyContext.html" title="class in org.apache.storm.task">TopologyContext</a> context, |
| <a href="../../../../org/apache/storm/task/OutputCollector.html" title="class in org.apache.storm.task">OutputCollector</a> collector)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/task/IBolt.html#prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-">IBolt</a></code></span></div> |
| <div class="block"><p>Called when a task for this component is initialized within a worker on the cluster. It provides the bolt with the environment in which the bolt executes.</p><p><p>This includes the:</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/storm/task/IBolt.html#prepare-java.util.Map-org.apache.storm.task.TopologyContext-org.apache.storm.task.OutputCollector-">prepare</a></code> in interface <code><a href="../../../../org/apache/storm/task/IBolt.html" title="interface in org.apache.storm.task">IBolt</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>topoConf</code> - The Storm configuration for this bolt. This is the configuration provided to the topology merged in with cluster configuration on this machine.</dd> |
| <dd><code>context</code> - This object can be used to get information about this task’s place within the topology, including the task id and component id of this task, input and output information, etc.</dd> |
| <dd><code>collector</code> - The collector is used to emit tuples from this bolt. Tuples can be emitted at any time, including the prepare and cleanup methods. The collector is thread-safe and should be saved as an instance variable of this bolt object.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="execute-org.apache.storm.tuple.Tuple-"> |
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| <h4>execute</h4> |
| <pre>public void execute(<a href="../../../../org/apache/storm/tuple/Tuple.html" title="interface in org.apache.storm.tuple">Tuple</a> input)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/task/IBolt.html#execute-org.apache.storm.tuple.Tuple-">IBolt</a></code></span></div> |
| <div class="block"><p>Process a single tuple of input. The Tuple object contains metadata on it about which component/stream/task it came from. The values of the Tuple can be accessed using Tuple#getValue. The IBolt does not have to process the Tuple immediately. It is perfectly fine to hang onto a tuple and process it later (for instance, to do an aggregation or join).</p><p><p>Tuples should be emitted using the OutputCollector provided through the prepare method. It is required that all input tuples are acked or failed at some point using the OutputCollector. Otherwise, Storm will be unable to determine when tuples coming off the spouts have been completed.</p><p><p>For the common case of acking an input tuple at the end of the execute method, see IBasicBolt which automates this.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/storm/task/IBolt.html#execute-org.apache.storm.tuple.Tuple-">execute</a></code> in interface <code><a href="../../../../org/apache/storm/task/IBolt.html" title="interface in org.apache.storm.task">IBolt</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>input</code> - The input tuple to be processed.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="cleanup--"> |
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| <h4>cleanup</h4> |
| <pre>public void cleanup()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/task/IBolt.html#cleanup--">IBolt</a></code></span></div> |
| <div class="block"><p>Called when an IBolt is going to be shutdown. Storm will make a best-effort attempt to call this if the worker shutdown is orderly. The <a href="../../../../org/apache/storm/Config.html#SUPERVISOR_WORKER_SHUTDOWN_SLEEP_SECS"><code>Config.SUPERVISOR_WORKER_SHUTDOWN_SLEEP_SECS</code></a> setting controls how long orderly shutdown is allowed to take. There is no guarantee that cleanup will be called if shutdown is not orderly, or if the shutdown exceeds the time limit.</p><p><p>The one context where cleanup is guaranteed to be called is when a topology is killed when running Storm in local mode.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/storm/task/IBolt.html#cleanup--">cleanup</a></code> in interface <code><a href="../../../../org/apache/storm/task/IBolt.html" title="interface in org.apache.storm.task">IBolt</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-"> |
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| <h4>declareOutputFields</h4> |
| <pre>public void declareOutputFields(<a href="../../../../org/apache/storm/topology/OutputFieldsDeclarer.html" title="interface in org.apache.storm.topology">OutputFieldsDeclarer</a> declarer)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/topology/IComponent.html#declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-">IComponent</a></code></span></div> |
| <div class="block"><p>Declare the output schema for all the streams of this topology.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/storm/topology/IComponent.html#declareOutputFields-org.apache.storm.topology.OutputFieldsDeclarer-">declareOutputFields</a></code> in interface <code><a href="../../../../org/apache/storm/topology/IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>declarer</code> - this is used to declare output stream ids, output fields, and whether or not each output stream is a direct stream</dd> |
| </dl> |
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| <h4>finishedId</h4> |
| <pre>public void finishedId(<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> id)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../org/apache/storm/coordination/CoordinatedBolt.FinishedCallback.html#finishedId-java.lang.Object-">finishedId</a></code> in interface <code><a href="../../../../org/apache/storm/coordination/CoordinatedBolt.FinishedCallback.html" title="interface in org.apache.storm.coordination">CoordinatedBolt.FinishedCallback</a></code></dd> |
| </dl> |
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| <h4>getComponentConfiguration</h4> |
| <pre>public <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<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>> getComponentConfiguration()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/storm/topology/IComponent.html#getComponentConfiguration--">IComponent</a></code></span></div> |
| <div class="block"><p>Declare configuration specific to this component. Only a subset of the “topology.*” configs can be overridden. The component configuration can be further overridden when constructing the topology using <a href="../../../../org/apache/storm/topology/TopologyBuilder.html" title="class in org.apache.storm.topology"><code>TopologyBuilder</code></a></p></div> |
| <dl> |
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| <dd><code><a href="../../../../org/apache/storm/topology/IComponent.html#getComponentConfiguration--">getComponentConfiguration</a></code> in interface <code><a href="../../../../org/apache/storm/topology/IComponent.html" title="interface in org.apache.storm.topology">IComponent</a></code></dd> |
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