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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.nemo.runtime.master.resource</a></div> |
| <h2 title="Class ContainerManager" class="title">Class ContainerManager</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <ul class="inheritance"> |
| <li>org.apache.nemo.runtime.master.resource.ContainerManager</li> |
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| <pre>@NotThreadSafe |
| public final class <span class="typeNameLabel">ContainerManager</span> |
| extends java.lang.Object</pre> |
| <div class="block">(WARNING) This class is not thread-safe. |
| Only a single thread should use the methods of this class. |
| (i.e., runtimeMasterThread in RuntimeMaster) |
| <p> |
| Encapsulates REEF's evaluator management for containers. |
| Serves as a single point of container management in Runtime. |
| We define a unit of resource a container (an evaluator in REEF), and launch a single executor on each container.</div> |
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| <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="#onContainerAllocated(java.lang.String,org.apache.reef.driver.evaluator.AllocatedEvaluator,org.apache.reef.tang.Configuration)">onContainerAllocated</a></span>​(java.lang.String executorId, |
| org.apache.reef.driver.evaluator.AllocatedEvaluator allocatedContainer, |
| org.apache.reef.tang.Configuration executorConfiguration)</code></th> |
| <td class="colLast"> |
| <div class="block">Take the necessary actions in container manager once a container a is allocated.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../common/ir/executionproperty/ResourceSpecification.html" title="class in org.apache.nemo.common.ir.executionproperty">ResourceSpecification</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onContainerFailed(java.lang.String)">onContainerFailed</a></span>​(java.lang.String failedEvaluatorId)</code></th> |
| <td class="colLast"> |
| <div class="block">Re-acquire a new container using the failed container's resource spec.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>java.util.Optional<<a href="ExecutorRepresenter.html" title="interface in org.apache.nemo.runtime.master.resource">ExecutorRepresenter</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onContainerLaunched(org.apache.reef.driver.context.ActiveContext)">onContainerLaunched</a></span>​(org.apache.reef.driver.context.ActiveContext activeContext)</code></th> |
| <td class="colLast"> |
| <div class="block">Initializes master's connection to the container once launched.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#requestContainer(int,org.apache.nemo.common.ir.executionproperty.ResourceSpecification)">requestContainer</a></span>​(int numToRequest, |
| <a href="../../../common/ir/executionproperty/ResourceSpecification.html" title="class in org.apache.nemo.common.ir.executionproperty">ResourceSpecification</a> resourceSpecification)</code></th> |
| <td class="colLast"> |
| <div class="block">Requests containers/evaluators with the given specifications.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#terminate()">terminate</a></span>()</code></th> |
| <td class="colLast"> </td> |
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| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
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| <h4>requestContainer</h4> |
| <pre class="methodSignature">public void requestContainer​(int numToRequest, |
| <a href="../../../common/ir/executionproperty/ResourceSpecification.html" title="class in org.apache.nemo.common.ir.executionproperty">ResourceSpecification</a> resourceSpecification)</pre> |
| <div class="block">Requests containers/evaluators with the given specifications.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>numToRequest</code> - number of containers to request</dd> |
| <dd><code>resourceSpecification</code> - containing the specifications of</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onContainerAllocated(java.lang.String,org.apache.reef.driver.evaluator.AllocatedEvaluator,org.apache.reef.tang.Configuration)"> |
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| <h4>onContainerAllocated</h4> |
| <pre class="methodSignature">public void onContainerAllocated​(java.lang.String executorId, |
| org.apache.reef.driver.evaluator.AllocatedEvaluator allocatedContainer, |
| org.apache.reef.tang.Configuration executorConfiguration)</pre> |
| <div class="block">Take the necessary actions in container manager once a container a is allocated.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>executorId</code> - of the executor to launch on this container.</dd> |
| <dd><code>allocatedContainer</code> - the allocated container.</dd> |
| <dd><code>executorConfiguration</code> - executor related configuration.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onContainerLaunched(org.apache.reef.driver.context.ActiveContext)"> |
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| <h4>onContainerLaunched</h4> |
| <pre class="methodSignature">public java.util.Optional<<a href="ExecutorRepresenter.html" title="interface in org.apache.nemo.runtime.master.resource">ExecutorRepresenter</a>> onContainerLaunched​(org.apache.reef.driver.context.ActiveContext activeContext)</pre> |
| <div class="block">Initializes master's connection to the container once launched. |
| A representation of the executor to reside in master is created.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>activeContext</code> - for the launched container.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a representation of the executor. (return an empty Optional if terminated)</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>onContainerFailed</h4> |
| <pre class="methodSignature">public <a href="../../../common/ir/executionproperty/ResourceSpecification.html" title="class in org.apache.nemo.common.ir.executionproperty">ResourceSpecification</a> onContainerFailed​(java.lang.String failedEvaluatorId)</pre> |
| <div class="block">Re-acquire a new container using the failed container's resource spec.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>failedEvaluatorId</code> - of the failed evaluator</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the resource specification of the failed evaluator</dd> |
| </dl> |
| </li> |
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| <h4>terminate</h4> |
| <pre class="methodSignature">public void terminate()</pre> |
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