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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.heron.scheduler.slurm</a></div>
<h2 title="Class SlurmScheduler" class="title">Class SlurmScheduler</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.apache.heron.scheduler.slurm.SlurmScheduler</li>
</ul>
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<dt>All Implemented Interfaces:</dt>
<dd><code>java.lang.AutoCloseable</code>, <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
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<hr>
<pre>public class <span class="typeNameLabel">SlurmScheduler</span>
extends java.lang.Object
implements <a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></pre>
<div class="block">Schedules a Heron topology in a HPC cluster using the Slurm Scheduler.
Uses sbatch command to allocate the resources and srun to run the heron processes.
Then uses scancel to cancel the running job.s</div>
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<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()">SlurmScheduler</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.String)">SlurmScheduler</a></span>&#8203;(java.lang.String&nbsp;workingDirectory)</code></th>
<td class="colLast">&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<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="#close()">close</a></span>()</code></th>
<td class="colLast">
<div class="block">This is to for disposing or cleaning up any internal state accumulated by
the scheduler</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <a href="SlurmController.html" title="class in org.apache.heron.scheduler.slurm">SlurmController</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getController()">getController</a></span>()</code></th>
<td class="colLast">
<div class="block">Get a SlurmControl basing on the config and runtime</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected java.lang.String[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getExecutorCommand(org.apache.heron.spi.packing.PackingPlan)">getExecutorCommand</a></span>&#8203;(<a href="../../spi/packing/PackingPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan</a>&nbsp;packing)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getHeronSlurmPath()">getHeronSlurmPath</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJobIdFilePath()">getJobIdFilePath</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>java.util.List&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJobLinks()">getJobLinks</a></span>()</code></th>
<td class="colLast">
<div class="block">This method will be called after onScheduler
It is responsible to return links to topology's customized ui pages.</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="#initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)">initialize</a></span>&#8203;(<a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a>&nbsp;mConfig,
<a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a>&nbsp;mRuntime)</code></th>
<td class="colLast">
<div class="block">This will initialize scheduler using config file.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">onKill</a></span>&#8203;(<a href="../../proto/scheduler/Scheduler.KillTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.KillTopologyRequest</a>&nbsp;request)</code></th>
<td class="colLast">
<div class="block">Called by SchedulerServer when it receives a http request to kill topology,
while the http request body would be the protobuf Scheduler.KillTopologyRequest.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">onRestart</a></span>&#8203;(<a href="../../proto/scheduler/Scheduler.RestartTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.RestartTopologyRequest</a>&nbsp;request)</code></th>
<td class="colLast">
<div class="block">Called by SchedulerServer when it receives a http request to restart topology,
while the http request body would be the protobuf Scheduler.RestartTopologyRequest.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onSchedule(org.apache.heron.spi.packing.PackingPlan)">onSchedule</a></span>&#8203;(<a href="../../spi/packing/PackingPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan</a>&nbsp;packing)</code></th>
<td class="colLast">
<div class="block">This method will be called after initialize.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">onUpdate</a></span>&#8203;(<a href="../../proto/scheduler/Scheduler.UpdateTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.UpdateTopologyRequest</a>&nbsp;request)</code></th>
<td class="colLast">
<div class="block">Called by SchedulerServer when it receives a http request to update topology,
while the http request body would be the protobuf Scheduler.UpdateTopologyRequest.</div>
</td>
</tr>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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<h4>SlurmScheduler</h4>
<pre>public&nbsp;SlurmScheduler()</pre>
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<h4>SlurmScheduler</h4>
<pre>public&nbsp;SlurmScheduler&#8203;(java.lang.String&nbsp;workingDirectory)</pre>
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<h4>initialize</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;initialize&#8203;(<a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a>&nbsp;mConfig,
<a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a>&nbsp;mRuntime)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)">IScheduler</a></code></span></div>
<div class="block">This will initialize scheduler using config file. Will be called during start.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)">initialize</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
</dl>
</li>
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<a id="getController()">
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<h4>getController</h4>
<pre class="methodSignature">protected&nbsp;<a href="SlurmController.html" title="class in org.apache.heron.scheduler.slurm">SlurmController</a>&nbsp;getController()</pre>
<div class="block">Get a SlurmControl basing on the config and runtime</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>SlurmController</dd>
</dl>
</li>
</ul>
<a id="close()">
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<h4>close</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;close()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#close()">IScheduler</a></code></span></div>
<div class="block">This is to for disposing or cleaning up any internal state accumulated by
the scheduler
<p>
Closes this stream and releases any system resources associated
with it. If the stream is already closed then invoking this
method has no effect.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>close</code>&nbsp;in interface&nbsp;<code>java.lang.AutoCloseable</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#close()">close</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
</dl>
</li>
</ul>
<a id="onSchedule(org.apache.heron.spi.packing.PackingPlan)">
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<h4>onSchedule</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;onSchedule&#8203;(<a href="../../spi/packing/PackingPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan</a>&nbsp;packing)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#onSchedule(org.apache.heron.spi.packing.PackingPlan)">IScheduler</a></code></span></div>
<div class="block">This method will be called after initialize.
It is responsible for grabbing resource to launch executor and make sure they
get launched.
<p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#onSchedule(org.apache.heron.spi.packing.PackingPlan)">onSchedule</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>packing</code> - Initial mapping suggested by running packing algorithm.</dd>
</dl>
</li>
</ul>
<a id="getJobLinks()">
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<h4>getJobLinks</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;java.lang.String&gt;&nbsp;getJobLinks()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#getJobLinks()">IScheduler</a></code></span></div>
<div class="block">This method will be called after onScheduler
It is responsible to return links to topology's customized ui pages.
Example: link to the Mesos Slave UI page displaying all scheduled containers</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#getJobLinks()">getJobLinks</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the links if any customized page. It returns an empty list if no any links</dd>
</dl>
</li>
</ul>
<a id="onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">
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<h4>onKill</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;onKill&#8203;(<a href="../../proto/scheduler/Scheduler.KillTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.KillTopologyRequest</a>&nbsp;request)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">IScheduler</a></code></span></div>
<div class="block">Called by SchedulerServer when it receives a http request to kill topology,
while the http request body would be the protobuf Scheduler.KillTopologyRequest.
The SchedulerServer would parse the request body and feed with this method.
It would be invoked in the executors of SchedulerServer.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">onKill</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>request</code> - The KillTopologyRequest sent from local heron-cli</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the IScheduler kills the topology successfully. SchedulerServer would
send KillTopologyResponse correspondingly according to this method's return value.</dd>
</dl>
</li>
</ul>
<a id="onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">
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<h4>onRestart</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;onRestart&#8203;(<a href="../../proto/scheduler/Scheduler.RestartTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.RestartTopologyRequest</a>&nbsp;request)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">IScheduler</a></code></span></div>
<div class="block">Called by SchedulerServer when it receives a http request to restart topology,
while the http request body would be the protobuf Scheduler.RestartTopologyRequest.
The SchedulerServer would parse the request body and feed with this method.
It would be invoked in the executors of SchedulerServer.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">onRestart</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>request</code> - The RestartTopologyRequest sent from local heron-cli</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the IScheduler restarts the topology successfully. SchedulerServer would
send RestartTopologyResponse correspondingly according to this method's return value.</dd>
</dl>
</li>
</ul>
<a id="onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">
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<h4>onUpdate</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;onUpdate&#8203;(<a href="../../proto/scheduler/Scheduler.UpdateTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.UpdateTopologyRequest</a>&nbsp;request)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../spi/scheduler/IScheduler.html#onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">IScheduler</a></code></span></div>
<div class="block">Called by SchedulerServer when it receives a http request to update topology,
while the http request body would be the protobuf Scheduler.UpdateTopologyRequest.
The SchedulerServer would parse the request body and feed with this method.
It would be invoked in the executors of SchedulerServer.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../spi/scheduler/IScheduler.html#onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">onUpdate</a></code>&nbsp;in interface&nbsp;<code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>request</code> - The UpdateTopologyRequest sent from local heron-cli</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the IScheduler updates the topology successfully. SchedulerServer would
send UpdateTopologyResponse correspondingly according to this method's return value.</dd>
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