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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.nemo.runtime.master.scheduler</a></div> |
| <h2 title="Class BatchScheduler" class="title">Class BatchScheduler</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.scheduler.BatchScheduler</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| </dl> |
| <hr> |
| <pre>@NotThreadSafe |
| public final class <span class="typeNameLabel">BatchScheduler</span> |
| extends java.lang.Object |
| implements <a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></pre> |
| <div class="block">(CONCURRENCY) Only a single dedicated thread should use the public methods of this class. |
| (i.e., runtimeMasterThread in RuntimeMaster) |
| <p> |
| BatchScheduler receives a single <a href="../../common/plan/PhysicalPlan.html" title="class in org.apache.nemo.runtime.common.plan"><code>PhysicalPlan</code></a> to execute and schedules the Tasks. |
| |
| Note: When modifying this class, take a look at <a href="SimulationScheduler.html" title="class in org.apache.nemo.runtime.master.scheduler"><code>SimulationScheduler</code></a>.</div> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
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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="#onExecutorAdded(org.apache.nemo.runtime.master.resource.ExecutorRepresenter)">onExecutorAdded</a></span>​(<a href="../resource/ExecutorRepresenter.html" title="interface in org.apache.nemo.runtime.master.resource">ExecutorRepresenter</a> executorRepresenter)</code></th> |
| <td class="colLast"> |
| <div class="block">Called when an executor is added to Runtime, so that the extra resource can be used to execute the job.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onExecutorRemoved(java.lang.String)">onExecutorRemoved</a></span>​(java.lang.String executorId)</code></th> |
| <td class="colLast"> |
| <div class="block">Called when an executor is removed from Runtime, so that faults related to the removal can be handled.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onRunTimePassMessage(java.lang.String,java.lang.Object)">onRunTimePassMessage</a></span>​(java.lang.String taskId, |
| java.lang.Object data)</code></th> |
| <td class="colLast"> |
| <div class="block">Process the RuntimePassMessage.</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="#onSpeculativeExecutionCheck()">onSpeculativeExecutionCheck</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">Called to check for speculative execution.</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="#onTaskStateReportFromExecutor(java.lang.String,java.lang.String,int,org.apache.nemo.runtime.common.state.TaskState.State,java.lang.String,org.apache.nemo.runtime.common.state.TaskState.RecoverableTaskFailureCause)">onTaskStateReportFromExecutor</a></span>​(java.lang.String executorId, |
| java.lang.String taskId, |
| int taskAttemptIndex, |
| <a href="../../common/state/TaskState.State.html" title="enum in org.apache.nemo.runtime.common.state">TaskState.State</a> newState, |
| java.lang.String vertexPutOnHold, |
| <a href="../../common/state/TaskState.RecoverableTaskFailureCause.html" title="enum in org.apache.nemo.runtime.common.state">TaskState.RecoverableTaskFailureCause</a> failureCause)</code></th> |
| <td class="colLast"> |
| <div class="block">Handles task state transition notifications sent from executors.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#schedulePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan,int)">schedulePlan</a></span>​(<a href="../../common/plan/PhysicalPlan.html" title="class in org.apache.nemo.runtime.common.plan">PhysicalPlan</a> submittedPhysicalPlan, |
| int maxScheduleAttempt)</code></th> |
| <td class="colLast"> |
| <div class="block">Schedules a given plan.</div> |
| </td> |
| </tr> |
| <tr id="i6" 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"> |
| <div class="block">To be called when a job should be terminated.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#updatePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan)">updatePlan</a></span>​(<a href="../../common/plan/PhysicalPlan.html" title="class in org.apache.nemo.runtime.common.plan">PhysicalPlan</a> newPhysicalPlan)</code></th> |
| <td class="colLast"> |
| <div class="block">Receives and updates the scheduler with a new physical plan for a job.</div> |
| </td> |
| </tr> |
| </table> |
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| <!-- --> |
| </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> |
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| <a id="updatePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan)"> |
| <!-- --> |
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| <ul class="blockList"> |
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| <h4>updatePlan</h4> |
| <pre class="methodSignature">public void updatePlan​(<a href="../../common/plan/PhysicalPlan.html" title="class in org.apache.nemo.runtime.common.plan">PhysicalPlan</a> newPhysicalPlan)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scheduler.html#updatePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan)">Scheduler</a></code></span></div> |
| <div class="block">Receives and updates the scheduler with a new physical plan for a job.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#updatePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan)">updatePlan</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>newPhysicalPlan</code> - new physical plan for the job.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onRunTimePassMessage(java.lang.String,java.lang.Object)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>onRunTimePassMessage</h4> |
| <pre class="methodSignature">public void onRunTimePassMessage​(java.lang.String taskId, |
| java.lang.Object data)</pre> |
| <div class="block">Process the RuntimePassMessage.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>taskId</code> - that generated the message.</dd> |
| <dd><code>data</code> - of the message.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="schedulePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan,int)"> |
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| </a> |
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| <h4>schedulePlan</h4> |
| <pre class="methodSignature">public void schedulePlan​(<a href="../../common/plan/PhysicalPlan.html" title="class in org.apache.nemo.runtime.common.plan">PhysicalPlan</a> submittedPhysicalPlan, |
| int maxScheduleAttempt)</pre> |
| <div class="block">Schedules a given plan. |
| If multiple physical plans are submitted, they will be appended and handled as a single plan. |
| TODO #182: Consider reshaping in run-time optimization. At now, we only consider plan appending.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#schedulePlan(org.apache.nemo.runtime.common.plan.PhysicalPlan,int)">schedulePlan</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>submittedPhysicalPlan</code> - the physical plan to schedule.</dd> |
| <dd><code>maxScheduleAttempt</code> - the max number of times this plan/sub-part of the plan should be attempted.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onTaskStateReportFromExecutor(java.lang.String,java.lang.String,int,org.apache.nemo.runtime.common.state.TaskState.State,java.lang.String,org.apache.nemo.runtime.common.state.TaskState.RecoverableTaskFailureCause)"> |
| <!-- --> |
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| <h4>onTaskStateReportFromExecutor</h4> |
| <pre class="methodSignature">public void onTaskStateReportFromExecutor​(java.lang.String executorId, |
| java.lang.String taskId, |
| int taskAttemptIndex, |
| <a href="../../common/state/TaskState.State.html" title="enum in org.apache.nemo.runtime.common.state">TaskState.State</a> newState, |
| @Nullable |
| java.lang.String vertexPutOnHold, |
| <a href="../../common/state/TaskState.RecoverableTaskFailureCause.html" title="enum in org.apache.nemo.runtime.common.state">TaskState.RecoverableTaskFailureCause</a> failureCause)</pre> |
| <div class="block">Handles task state transition notifications sent from executors. |
| Note that we can receive notifications for previous task attempts, due to the nature of asynchronous events. |
| We ignore such late-arriving notifications, and only handle notifications for the current task attempt.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#onTaskStateReportFromExecutor(java.lang.String,java.lang.String,int,org.apache.nemo.runtime.common.state.TaskState.State,java.lang.String,org.apache.nemo.runtime.common.state.TaskState.RecoverableTaskFailureCause)">onTaskStateReportFromExecutor</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>executorId</code> - the id of the executor where the message was sent from.</dd> |
| <dd><code>taskId</code> - whose state has changed</dd> |
| <dd><code>taskAttemptIndex</code> - of the task whose state has changed</dd> |
| <dd><code>newState</code> - the state to change to</dd> |
| <dd><code>vertexPutOnHold</code> - the ID of vertex that is put on hold. It is null otherwise.</dd> |
| <dd><code>failureCause</code> - for which the Task failed in the case of a recoverable failure.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onSpeculativeExecutionCheck()"> |
| <!-- --> |
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| <h4>onSpeculativeExecutionCheck</h4> |
| <pre class="methodSignature">public void onSpeculativeExecutionCheck()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scheduler.html#onSpeculativeExecutionCheck()">Scheduler</a></code></span></div> |
| <div class="block">Called to check for speculative execution.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#onSpeculativeExecutionCheck()">onSpeculativeExecutionCheck</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onExecutorAdded(org.apache.nemo.runtime.master.resource.ExecutorRepresenter)"> |
| <!-- --> |
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| <h4>onExecutorAdded</h4> |
| <pre class="methodSignature">public void onExecutorAdded​(<a href="../resource/ExecutorRepresenter.html" title="interface in org.apache.nemo.runtime.master.resource">ExecutorRepresenter</a> executorRepresenter)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scheduler.html#onExecutorAdded(org.apache.nemo.runtime.master.resource.ExecutorRepresenter)">Scheduler</a></code></span></div> |
| <div class="block">Called when an executor is added to Runtime, so that the extra resource can be used to execute the job.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#onExecutorAdded(org.apache.nemo.runtime.master.resource.ExecutorRepresenter)">onExecutorAdded</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>executorRepresenter</code> - a representation of the added executor.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onExecutorRemoved(java.lang.String)"> |
| <!-- --> |
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| <li class="blockList"> |
| <h4>onExecutorRemoved</h4> |
| <pre class="methodSignature">public void onExecutorRemoved​(java.lang.String executorId)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scheduler.html#onExecutorRemoved(java.lang.String)">Scheduler</a></code></span></div> |
| <div class="block">Called when an executor is removed from Runtime, so that faults related to the removal can be handled.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#onExecutorRemoved(java.lang.String)">onExecutorRemoved</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>executorId</code> - of the executor that has been removed.</dd> |
| </dl> |
| </li> |
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| <h4>terminate</h4> |
| <pre class="methodSignature">public void terminate()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="Scheduler.html#terminate()">Scheduler</a></code></span></div> |
| <div class="block">To be called when a job should be terminated. |
| Any clean up code should be implemented in this method.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="Scheduler.html#terminate()">terminate</a></code> in interface <code><a href="Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler">Scheduler</a></code></dd> |
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