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<h2 title="Interface ComputeJobMasterLeaveAware" class="title">Interface ComputeJobMasterLeaveAware</h2>
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<pre>public interface <span class="strong">ComputeJobMasterLeaveAware</span></pre>
<div class="block">Annotation for handling master node leave during job execution.
<p>
If <a href="../../../../org/apache/ignite/compute/ComputeJob.html" title="interface in org.apache.ignite.compute"><code>ComputeJob</code></a> concrete class implements this interface then in case when master node leaves topology
during job execution the callback method <a href="../../../../org/apache/ignite/compute/ComputeJobMasterLeaveAware.html#onMasterNodeLeft(org.apache.ignite.compute.ComputeTaskSession)"><code>onMasterNodeLeft(ComputeTaskSession)</code></a> will be executed.
<p>
Implementing this interface gives you ability to preserve job execution result or its intermediate state
which could be reused later. E.g. you can save job execution result to the database or as a checkpoint
and reuse it when failed task is being executed again thus avoiding job execution from scratch.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/apache/ignite/compute/ComputeJobMasterLeaveAware.html#onMasterNodeLeft(org.apache.ignite.compute.ComputeTaskSession)">onMasterNodeLeft</a></strong>(<a href="../../../../org/apache/ignite/compute/ComputeTaskSession.html" title="interface in org.apache.ignite.compute">ComputeTaskSession</a>&nbsp;ses)</code>
<div class="block">A method which is executed in case master node has left topology during job execution.</div>
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<h4>onMasterNodeLeft</h4>
<pre>void&nbsp;onMasterNodeLeft(<a href="../../../../org/apache/ignite/compute/ComputeTaskSession.html" title="interface in org.apache.ignite.compute">ComputeTaskSession</a>&nbsp;ses)
throws <a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></pre>
<div class="block">A method which is executed in case master node has left topology during job execution.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>ses</code> - Task session, can be used for checkpoint saving.</dd>
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<dd><code><a href="../../../../org/apache/ignite/IgniteException.html" title="class in org.apache.ignite">IgniteException</a></code> - In case of any exception.</dd></dl>
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<p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://incubator.apache.org/projects/ignite.html"><nobr>2015 Copyright &#169; Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> <script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Apache Ignite Fabric</b> </td> <td>:&nbsp;&nbsp; ver. <strong>1.0.0-RC3</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>:&nbsp;&nbsp; March 24 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p>
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