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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. |
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| 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> 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 onMasterNodeLeft(<a href="../../../../org/apache/ignite/compute/ComputeTaskSession.html" title="interface in org.apache.ignite.compute">ComputeTaskSession</a> 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> |
| <dt><span class="strong">Throws:</span></dt> |
| <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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