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<div class="subTitle">org.apache.mesos</div>
<h2 title="Class MesosExecutorDriver" class="title">Class MesosExecutorDriver</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<ul class="inheritance">
<li>org.apache.mesos.MesosExecutorDriver</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></dd>
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<br>
<pre>public class <span class="strong">MesosExecutorDriver</span>
extends java.lang.Object
implements <a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></pre>
<div class="block">Concrete implementation of an ExecutorDriver that connects an
Executor with a Mesos slave. The MesosExecutorDriver is
thread-safe.
<p>
The driver is responsible for invoking the Executor callbacks as it
communicates with the Mesos slave.
</p>
<p>
Note that blocking on the MesosExecutorDriver (e.g., via <a href="../../../org/apache/mesos/MesosExecutorDriver.html#join()"><code>join()</code></a>) doesn't affect the executor callbacks in anyway because
they are handled by a different thread.
</p>
<p>
Note that the driver uses GLOG to do its own logging. GLOG flags can
be set via environment variables, prefixing the flag name with
"GLOG_", e.g., "GLOG_v=1". For Mesos specific logging flags see
src/logging/flags.hpp. Mesos flags can also be set via environment
variables, prefixing the flag name with "MESOS_", e.g.,
"MESOS_QUIET=1".
</p>
<p>
See src/examples/java/TestExecutor.java for an example of using the
MesosExecutorDriver.
</p></div>
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<h3>Constructor Summary</h3>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#MesosExecutorDriver(org.apache.mesos.Executor)">MesosExecutorDriver</a></strong>(<a href="../../../org/apache/mesos/Executor.html" title="interface in org.apache.mesos">Executor</a>&nbsp;executor)</code>
<div class="block">Creates a new driver that uses the specified Executor.</div>
</td>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#abort()">abort</a></strong>()</code>
<div class="block">Aborts the driver so that no more callbacks can be made to the
executor.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#finalize()">finalize</a></strong>()</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#initialize()">initialize</a></strong>()</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#join()">join</a></strong>()</code>
<div class="block">Waits for the driver to be stopped or aborted, possibly
_blocking_ the current thread indefinitely.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#run()">run</a></strong>()</code>
<div class="block">Starts and immediately joins (i.e., blocks on) the driver.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#sendFrameworkMessage(byte[])">sendFrameworkMessage</a></strong>(byte[]&nbsp;data)</code>
<div class="block">Sends a message to the framework scheduler.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#sendStatusUpdate(org.apache.mesos.Protos.TaskStatus)">sendStatusUpdate</a></strong>(<a href="../../../org/apache/mesos/Protos.TaskStatus.html" title="class in org.apache.mesos">Protos.TaskStatus</a>&nbsp;status)</code>
<div class="block">Sends a status update to the framework scheduler, retrying as
necessary until an acknowledgement has been received or the
executor is terminated (in which case, a TASK_LOST status update
will be sent).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#start()">start</a></strong>()</code>
<div class="block">See ExecutorDriver for descriptions of these.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/apache/mesos/MesosExecutorDriver.html#stop()">stop</a></strong>()</code>
<div class="block">Stops the executor driver.</div>
</td>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>MesosExecutorDriver</h4>
<pre>public&nbsp;MesosExecutorDriver(<a href="../../../org/apache/mesos/Executor.html" title="interface in org.apache.mesos">Executor</a>&nbsp;executor)</pre>
<div class="block">Creates a new driver that uses the specified Executor.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>executor</code> - The instance of the executor that will be used
to connect to the slave.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Executor.html" title="interface in org.apache.mesos"><code>Executor</code></a></dd></dl>
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<h3>Method Detail</h3>
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<h4>start</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;start()</pre>
<div class="block">See ExecutorDriver for descriptions of these.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#start()">start</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos"><code>ExecutorDriver</code></a></dd></dl>
</li>
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<h4>stop</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;stop()</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html#stop()">ExecutorDriver</a></code></strong></div>
<div class="block">Stops the executor driver.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#stop()">stop</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos"><code>Protos.Status</code></a></dd></dl>
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<h4>abort</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;abort()</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html#abort()">ExecutorDriver</a></code></strong></div>
<div class="block">Aborts the driver so that no more callbacks can be made to the
executor. The semantics of abort and stop have deliberately been
separated so that code can detect an aborted driver (i.e., via
the return status of <a href="../../../org/apache/mesos/ExecutorDriver.html#join()"><code>ExecutorDriver.join()</code></a>, see below),
and instantiate and start another driver if desired (from within
the same process ... although this functionality is currently not
supported for executors).</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#abort()">abort</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos"><code>Protos.Status</code></a></dd></dl>
</li>
</ul>
<a name="join()">
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<h4>join</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;join()</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html#join()">ExecutorDriver</a></code></strong></div>
<div class="block">Waits for the driver to be stopped or aborted, possibly
_blocking_ the current thread indefinitely. The return status of
this function can be used to determine if the driver was aborted
(see mesos.proto for a description of Status).</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#join()">join</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos"><code>Protos.Status</code></a></dd></dl>
</li>
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<a name="run()">
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<h4>run</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;run()</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html#run()">ExecutorDriver</a></code></strong></div>
<div class="block">Starts and immediately joins (i.e., blocks on) the driver.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#run()">run</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos"><code>Protos.Status</code></a></dd></dl>
</li>
</ul>
<a name="sendStatusUpdate(org.apache.mesos.Protos.TaskStatus)">
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<h4>sendStatusUpdate</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;sendStatusUpdate(<a href="../../../org/apache/mesos/Protos.TaskStatus.html" title="class in org.apache.mesos">Protos.TaskStatus</a>&nbsp;status)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html#sendStatusUpdate(org.apache.mesos.Protos.TaskStatus)">ExecutorDriver</a></code></strong></div>
<div class="block">Sends a status update to the framework scheduler, retrying as
necessary until an acknowledgement has been received or the
executor is terminated (in which case, a TASK_LOST status update
will be sent). See <a href="../../../org/apache/mesos/Scheduler.html#statusUpdate(org.apache.mesos.SchedulerDriver,%20org.apache.mesos.Protos.TaskStatus)"><code>Scheduler.statusUpdate(org.apache.mesos.SchedulerDriver, org.apache.mesos.Protos.TaskStatus)</code></a> for more
information about status update acknowledgements.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#sendStatusUpdate(org.apache.mesos.Protos.TaskStatus)">sendStatusUpdate</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>status</code> - The status update to send.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos"><code>Protos.Status</code></a></dd></dl>
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<h4>sendFrameworkMessage</h4>
<pre>public&nbsp;<a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos">Protos.Status</a>&nbsp;sendFrameworkMessage(byte[]&nbsp;data)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html#sendFrameworkMessage(byte[])">ExecutorDriver</a></code></strong></div>
<div class="block">Sends a message to the framework scheduler. These messages are
best effort; do not expect a framework message to be
retransmitted in any reliable fashion.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/apache/mesos/ExecutorDriver.html#sendFrameworkMessage(byte[])">sendFrameworkMessage</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/apache/mesos/ExecutorDriver.html" title="interface in org.apache.mesos">ExecutorDriver</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>data</code> - The message payload.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The state of the driver after the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/apache/mesos/Protos.Status.html" title="enum in org.apache.mesos"><code>Protos.Status</code></a></dd></dl>
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<pre>protected&nbsp;void&nbsp;initialize()</pre>
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<h4>finalize</h4>
<pre>protected&nbsp;void&nbsp;finalize()</pre>
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<dt><strong>Overrides:</strong></dt>
<dd><code>finalize</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
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