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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">backtype.storm.task</a></div> |
| <h2 title="Class TopologyContext" class="title">Class TopologyContext</h2> |
| </div> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="GeneralTopologyContext.html" title="class in backtype.storm.task">backtype.storm.task.GeneralTopologyContext</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="WorkerTopologyContext.html" title="class in backtype.storm.task">backtype.storm.task.WorkerTopologyContext</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>backtype.storm.task.TopologyContext</li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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| <div class="description"> |
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| <dl> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="IMetricsContext.html" title="interface in backtype.storm.task">IMetricsContext</a></code>, <code>org.json.simple.JSONAware</code></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><code><a href="BoltTopologyContext.html" title="class in backtype.storm.task">BoltTopologyContext</a></code>, <code><a href="SpoutTopologyContext.html" title="class in backtype.storm.task">SpoutTopologyContext</a></code></dd> |
| </dl> |
| <hr> |
| <pre>public class <span class="typeNameLabel">TopologyContext</span> |
| extends <a href="WorkerTopologyContext.html" title="class in backtype.storm.task">WorkerTopologyContext</a> |
| implements <a href="IMetricsContext.html" title="interface in backtype.storm.task">IMetricsContext</a></pre> |
| <div class="block">A TopologyContext is given to bolts and spouts in their "prepare" and "open" |
| methods, respectively. This object provides information about the component's |
| place within the topology, such as task ids, inputs and outputs, etc. |
| |
| <p>The TopologyContext is also used to declare ISubscribedState objects to |
| synchronize state with StateSpouts this object is subscribed to.</div> |
| </li> |
| </ul> |
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| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
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| <h3>Constructor Summary</h3> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(backtype.storm.generated.StormTopology,java.util.Map,java.util.Map,java.util.Map,java.util.Map,java.lang.String,java.lang.String,java.lang.String,java.lang.Integer,java.lang.Integer,java.util.List,java.util.Map,java.util.Map,java.util.Map,java.util.Map,clojure.lang.Atom)">TopologyContext</a></span>​(<a href="../generated/StormTopology.html" title="class in backtype.storm.generated">StormTopology</a> topology, |
| java.util.Map stormConf, |
| java.util.Map<java.lang.Integer,​java.lang.String> taskToComponent, |
| java.util.Map<java.lang.String,​java.util.List<java.lang.Integer>> componentToSortedTasks, |
| java.util.Map<java.lang.String,​java.util.Map<java.lang.String,​<a href="../tuple/Fields.html" title="class in backtype.storm.tuple">Fields</a>>> componentToStreamToFields, |
| java.lang.String stormId, |
| java.lang.String codeDir, |
| java.lang.String pidDir, |
| java.lang.Integer taskId, |
| java.lang.Integer workerPort, |
| java.util.List<java.lang.Integer> workerTasks, |
| java.util.Map<java.lang.String,​java.lang.Object> defaultResources, |
| java.util.Map<java.lang.String,​java.lang.Object> userResources, |
| java.util.Map<java.lang.String,​java.lang.Object> executorData, |
| java.util.Map<java.lang.String,​java.lang.Object> registeredMetrics, |
| clojure.lang.Atom openOrPrepareWasCalled)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.heron.api.topology.TopologyContext)">TopologyContext</a></span>​(<a href="../../../org/apache/heron/api/topology/TopologyContext.html" title="interface in org.apache.heron.api.topology">TopologyContext</a> delegate)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addTaskHook(backtype.storm.hooks.ITaskHook)">addTaskHook</a></span>​(<a href="../hooks/ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a> newHook)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>java.util.Collection<<a href="../hooks/ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHooks()">getHooks</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.lang.Object</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTaskData(java.lang.String)">getTaskData</a></span>​(java.lang.String name)</code></th> |
| <td class="colLast"> </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="#getThisComponentId()">getThisComponentId</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the component id for this task.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../tuple/Fields.html" title="class in backtype.storm.tuple">Fields</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getThisOutputFields(java.lang.String)">getThisOutputFields</a></span>​(java.lang.String streamId)</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the declared output fields for the specified stream id for the component |
| this task is a part of.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>java.util.Set<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getThisStreams()">getThisStreams</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the set of streams declared for the component of this task.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getThisTaskId()">getThisTaskId</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the task id of this task.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getThisTaskIndex()">getThisTaskIndex</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Gets the index of this task id in getComponentTasks(getThisComponentId()).</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../metric/api/CombinedMetric.html" title="class in backtype.storm.metric.api">CombinedMetric</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#registerMetric(java.lang.String,backtype.storm.metric.api.ICombiner,int)">registerMetric</a></span>​(java.lang.String name, |
| <a href="../metric/api/ICombiner.html" title="interface in backtype.storm.metric.api">ICombiner</a> combiner, |
| int timeBucketSizeInSecs)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../metric/api/ReducedMetric.html" title="class in backtype.storm.metric.api">ReducedMetric</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#registerMetric(java.lang.String,backtype.storm.metric.api.IReducer,int)">registerMetric</a></span>​(java.lang.String name, |
| <a href="../metric/api/IReducer.html" title="interface in backtype.storm.metric.api">IReducer</a> reducer, |
| int timeBucketSizeInSecs)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><T extends <a href="../metric/api/IMetric.html" title="interface in backtype.storm.metric.api">IMetric</a>><br>T</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#registerMetric(java.lang.String,T,int)">registerMetric</a></span>​(java.lang.String name, |
| T metric, |
| int timeBucketSizeInSecs)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setTaskData(java.lang.String,java.lang.Object)">setTaskData</a></span>​(java.lang.String name, |
| java.lang.Object data)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.backtype.storm.task.WorkerTopologyContext"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class backtype.storm.task.<a href="WorkerTopologyContext.html" title="class in backtype.storm.task">WorkerTopologyContext</a></h3> |
| <code><a href="WorkerTopologyContext.html#getCodeDir()">getCodeDir</a>, <a href="WorkerTopologyContext.html#getPIDDir()">getPIDDir</a>, <a href="WorkerTopologyContext.html#getResource(java.lang.String)">getResource</a>, <a href="WorkerTopologyContext.html#getSharedExecutor()">getSharedExecutor</a>, <a href="WorkerTopologyContext.html#getThisWorkerPort()">getThisWorkerPort</a>, <a href="WorkerTopologyContext.html#getThisWorkerTasks()">getThisWorkerTasks</a></code></li> |
| </ul> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.backtype.storm.task.GeneralTopologyContext"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class backtype.storm.task.<a href="GeneralTopologyContext.html" title="class in backtype.storm.task">GeneralTopologyContext</a></h3> |
| <code><a href="GeneralTopologyContext.html#getComponentId(int)">getComponentId</a>, <a href="GeneralTopologyContext.html#getComponentIds()">getComponentIds</a>, <a href="GeneralTopologyContext.html#getComponentOutputFields(java.lang.String,java.lang.String)">getComponentOutputFields</a>, <a href="GeneralTopologyContext.html#getComponentStreams(java.lang.String)">getComponentStreams</a>, <a href="GeneralTopologyContext.html#getComponentTasks(java.lang.String)">getComponentTasks</a>, <a href="GeneralTopologyContext.html#getStormId()">getStormId</a>, <a href="GeneralTopologyContext.html#getTaskToComponent()">getTaskToComponent</a>, <a href="GeneralTopologyContext.html#toJSONString()">toJSONString</a></code></li> |
| </ul> |
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| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <li class="blockList"> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <section> |
| <ul class="blockList"> |
| <li class="blockList"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a id="<init>(backtype.storm.generated.StormTopology,java.util.Map,java.util.Map,java.util.Map,java.util.Map,java.lang.String,java.lang.String,java.lang.String,java.lang.Integer,java.lang.Integer,java.util.List,java.util.Map,java.util.Map,java.util.Map,java.util.Map,clojure.lang.Atom)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>TopologyContext</h4> |
| <pre>public TopologyContext​(<a href="../generated/StormTopology.html" title="class in backtype.storm.generated">StormTopology</a> topology, |
| java.util.Map stormConf, |
| java.util.Map<java.lang.Integer,​java.lang.String> taskToComponent, |
| java.util.Map<java.lang.String,​java.util.List<java.lang.Integer>> componentToSortedTasks, |
| java.util.Map<java.lang.String,​java.util.Map<java.lang.String,​<a href="../tuple/Fields.html" title="class in backtype.storm.tuple">Fields</a>>> componentToStreamToFields, |
| java.lang.String stormId, |
| java.lang.String codeDir, |
| java.lang.String pidDir, |
| java.lang.Integer taskId, |
| java.lang.Integer workerPort, |
| java.util.List<java.lang.Integer> workerTasks, |
| java.util.Map<java.lang.String,​java.lang.Object> defaultResources, |
| java.util.Map<java.lang.String,​java.lang.Object> userResources, |
| java.util.Map<java.lang.String,​java.lang.Object> executorData, |
| java.util.Map<java.lang.String,​java.lang.Object> registeredMetrics, |
| clojure.lang.Atom openOrPrepareWasCalled)</pre> |
| </li> |
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| <a id="<init>(org.apache.heron.api.topology.TopologyContext)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>TopologyContext</h4> |
| <pre>public TopologyContext​(<a href="../../../org/apache/heron/api/topology/TopologyContext.html" title="interface in org.apache.heron.api.topology">TopologyContext</a> delegate)</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
| <section> |
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| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a id="getThisTaskId()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getThisTaskId</h4> |
| <pre class="methodSignature">public int getThisTaskId()</pre> |
| <div class="block">Gets the task id of this task.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the task id</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getThisComponentId()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getThisComponentId</h4> |
| <pre class="methodSignature">public java.lang.String getThisComponentId()</pre> |
| <div class="block">Gets the component id for this task. The component id maps |
| to a component id specified for a Spout or Bolt in the topology definition.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the compoenent id</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getThisOutputFields(java.lang.String)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>getThisOutputFields</h4> |
| <pre class="methodSignature">public <a href="../tuple/Fields.html" title="class in backtype.storm.tuple">Fields</a> getThisOutputFields​(java.lang.String streamId)</pre> |
| <div class="block">Gets the declared output fields for the specified stream id for the component |
| this task is a part of.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>streamId</code> - The id of the output field.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the declared output fields for the specified stream id</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getThisStreams()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getThisStreams</h4> |
| <pre class="methodSignature">public java.util.Set<java.lang.String> getThisStreams()</pre> |
| <div class="block">Gets the set of streams declared for the component of this task.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the set of streams</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getThisTaskIndex()"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getThisTaskIndex</h4> |
| <pre class="methodSignature">public int getThisTaskIndex()</pre> |
| <div class="block">Gets the index of this task id in getComponentTasks(getThisComponentId()). |
| An example use case for this method is determining which task |
| accesses which resource in a distributed resource to ensure an even distribution.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the task index</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="setTaskData(java.lang.String,java.lang.Object)"> |
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| </a> |
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| <li class="blockList"> |
| <h4>setTaskData</h4> |
| <pre class="methodSignature">public void setTaskData​(java.lang.String name, |
| java.lang.Object data)</pre> |
| </li> |
| </ul> |
| <a id="getTaskData(java.lang.String)"> |
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| </a> |
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| <h4>getTaskData</h4> |
| <pre class="methodSignature">public java.lang.Object getTaskData​(java.lang.String name)</pre> |
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| <a id="addTaskHook(backtype.storm.hooks.ITaskHook)"> |
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| <h4>addTaskHook</h4> |
| <pre class="methodSignature">public void addTaskHook​(<a href="../hooks/ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a> newHook)</pre> |
| </li> |
| </ul> |
| <a id="getHooks()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getHooks</h4> |
| <pre class="methodSignature">public java.util.Collection<<a href="../hooks/ITaskHook.html" title="interface in backtype.storm.hooks">ITaskHook</a>> getHooks()</pre> |
| </li> |
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| <a id="registerMetric(java.lang.String,backtype.storm.metric.api.IMetric,int)"> |
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| <h4>registerMetric</h4> |
| <pre class="methodSignature">public <T extends <a href="../metric/api/IMetric.html" title="interface in backtype.storm.metric.api">IMetric</a>> T registerMetric​(java.lang.String name, |
| T metric, |
| int timeBucketSizeInSecs)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="IMetricsContext.html#registerMetric(java.lang.String,T,int)">registerMetric</a></code> in interface <code><a href="IMetricsContext.html" title="interface in backtype.storm.task">IMetricsContext</a></code></dd> |
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| <h4>registerMetric</h4> |
| <pre class="methodSignature">public <a href="../metric/api/ReducedMetric.html" title="class in backtype.storm.metric.api">ReducedMetric</a> registerMetric​(java.lang.String name, |
| <a href="../metric/api/IReducer.html" title="interface in backtype.storm.metric.api">IReducer</a> reducer, |
| int timeBucketSizeInSecs)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="IMetricsContext.html#registerMetric(java.lang.String,backtype.storm.metric.api.IReducer,int)">registerMetric</a></code> in interface <code><a href="IMetricsContext.html" title="interface in backtype.storm.task">IMetricsContext</a></code></dd> |
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| <h4>registerMetric</h4> |
| <pre class="methodSignature">public <a href="../metric/api/CombinedMetric.html" title="class in backtype.storm.metric.api">CombinedMetric</a> registerMetric​(java.lang.String name, |
| <a href="../metric/api/ICombiner.html" title="interface in backtype.storm.metric.api">ICombiner</a> combiner, |
| int timeBucketSizeInSecs)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="IMetricsContext.html#registerMetric(java.lang.String,backtype.storm.metric.api.ICombiner,int)">registerMetric</a></code> in interface <code><a href="IMetricsContext.html" title="interface in backtype.storm.task">IMetricsContext</a></code></dd> |
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