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| <div class="subTitle">org.apache.ignite.events</div> |
| <h2 title="Class TaskEvent" class="title">Class TaskEvent</h2> |
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| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../org/apache/ignite/events/EventAdapter.html" title="class in org.apache.ignite.events">org.apache.ignite.events.EventAdapter</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.ignite.events.TaskEvent</li> |
| </ul> |
| </li> |
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| <dt>All Implemented Interfaces:</dt> |
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| </dl> |
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| <br> |
| <pre>public class <span class="strong">TaskEvent</span> |
| extends <a href="../../../../org/apache/ignite/events/EventAdapter.html" title="class in org.apache.ignite.events">EventAdapter</a></pre> |
| <div class="block">Grid task event. |
| <p> |
| Grid events are used for notification about what happens within the grid. Note that by |
| design Ignite keeps all events generated on the local node locally and it provides |
| APIs for performing a distributed queries across multiple nodes: |
| <ul> |
| <li> |
| <a href="../../../../org/apache/ignite/IgniteEvents.html#remoteQuery(org.apache.ignite.lang.IgnitePredicate, long, int...)"><code>IgniteEvents.remoteQuery(org.apache.ignite.lang.IgnitePredicate, long, int...)</code></a> - |
| asynchronously querying events occurred on the nodes specified, including remote nodes. |
| </li> |
| <li> |
| <a href="../../../../org/apache/ignite/IgniteEvents.html#localQuery(org.apache.ignite.lang.IgnitePredicate, int...)"><code>IgniteEvents.localQuery(org.apache.ignite.lang.IgnitePredicate, int...)</code></a> - |
| querying only local events stored on this local node. |
| </li> |
| <li> |
| <a href="../../../../org/apache/ignite/IgniteEvents.html#localListen(org.apache.ignite.lang.IgnitePredicate, int...)"><code>IgniteEvents.localListen(org.apache.ignite.lang.IgnitePredicate, int...)</code></a> - |
| listening to local grid events (events from remote nodes not included). |
| </li> |
| </ul> |
| User can also wait for events using method <a href="../../../../org/apache/ignite/IgniteEvents.html#waitForLocal(org.apache.ignite.lang.IgnitePredicate, int...)"><code>IgniteEvents.waitForLocal(org.apache.ignite.lang.IgnitePredicate, int...)</code></a>. |
| <h1 class="header">Events and Performance</h1> |
| Note that by default all events in Ignite are enabled and therefore generated and stored |
| by whatever event storage SPI is configured. Ignite can and often does generate thousands events per seconds |
| under the load and therefore it creates a significant additional load on the system. If these events are |
| not needed by the application this load is unnecessary and leads to significant performance degradation. |
| <p> |
| It is <b>highly recommended</b> to enable only those events that your application logic requires |
| by using <a href="../../../../org/apache/ignite/configuration/IgniteConfiguration.html#getIncludeEventTypes()"><code>IgniteConfiguration.getIncludeEventTypes()</code></a> method in Ignite configuration. Note that certain |
| events are required for Ignite's internal operations and such events will still be generated but not stored by |
| event storage SPI if they are disabled in Ignite configuration.</div> |
| <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../org/apache/ignite/events/EventType.html#EVT_TASK_FAILED"><code>EventType.EVT_TASK_FAILED</code></a>, |
| <a href="../../../../org/apache/ignite/events/EventType.html#EVT_TASK_FINISHED"><code>EventType.EVT_TASK_FINISHED</code></a>, |
| <a href="../../../../org/apache/ignite/events/EventType.html#EVT_TASK_REDUCED"><code>EventType.EVT_TASK_REDUCED</code></a>, |
| <a href="../../../../org/apache/ignite/events/EventType.html#EVT_TASK_STARTED"><code>EventType.EVT_TASK_STARTED</code></a>, |
| <a href="../../../../org/apache/ignite/events/EventType.html#EVT_TASK_SESSION_ATTR_SET"><code>EventType.EVT_TASK_SESSION_ATTR_SET</code></a>, |
| <a href="../../../../org/apache/ignite/events/EventType.html#EVT_TASK_TIMEDOUT"><code>EventType.EVT_TASK_TIMEDOUT</code></a>, |
| <a href="../../../../org/apache/ignite/events/EventType.html#EVTS_TASK_EXECUTION"><code>EventType.EVTS_TASK_EXECUTION</code></a>, |
| <a href="../../../../serialized-form.html#org.apache.ignite.events.TaskEvent">Serialized Form</a></dd></dl> |
| </li> |
| </ul> |
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| <h3>Constructor Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </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/ignite/events/TaskEvent.html#TaskEvent(org.apache.ignite.cluster.ClusterNode, java.lang.String, int, org.apache.ignite.lang.IgniteUuid, java.lang.String, java.lang.String, boolean, java.util.UUID)">TaskEvent</a></strong>(<a href="../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> node, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> msg, |
| int type, |
| <a href="../../../../org/apache/ignite/lang/IgniteUuid.html" title="class in org.apache.ignite.lang">IgniteUuid</a> sesId, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> taskName, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> taskClsName, |
| boolean internal, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a> subjId)</code> |
| <div class="block">Creates task event with given parameters.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span>Methods</span><span class="tabEnd"> </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>boolean</code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#internal()">internal</a></strong>()</code> |
| <div class="block">Returns <code>true</code> if task is created by Ignite and is used for system needs.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#shortDisplay()">shortDisplay</a></strong>()</code> |
| <div class="block">Gets a shortened version of <code>toString()</code> result.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#subjectId()">subjectId</a></strong>()</code> |
| <div class="block">Gets security subject ID initiated this task event, if available.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#taskClassName()">taskClassName</a></strong>()</code> |
| <div class="block">Gets name of task class that triggered this event.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#taskName()">taskName</a></strong>()</code> |
| <div class="block">Gets name of the task that triggered the event.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/ignite/lang/IgniteUuid.html" title="class in org.apache.ignite.lang">IgniteUuid</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#taskSessionId()">taskSessionId</a></strong>()</code> |
| <div class="block">Gets session ID of the task that triggered the event.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><strong><a href="../../../../org/apache/ignite/events/TaskEvent.html#toString()">toString</a></strong>()</code></td> |
| </tr> |
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| <h3>Methods inherited from class org.apache.ignite.events.<a href="../../../../org/apache/ignite/events/EventAdapter.html" title="class in org.apache.ignite.events">EventAdapter</a></h3> |
| <code><a href="../../../../org/apache/ignite/events/EventAdapter.html#compareTo(org.apache.ignite.events.Event)">compareTo</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#equals(java.lang.Object)">equals</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#hashCode()">hashCode</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#id()">id</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#localOrder()">localOrder</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#message()">message</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#message(java.lang.String)">message</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#name()">name</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#node()">node</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#node(org.apache.ignite.cluster.ClusterNode)">node</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#timestamp()">timestamp</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#type()">type</a>, <a href="../../../../org/apache/ignite/events/EventAdapter.html#type(int)">type</a></code></li> |
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| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
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| </div> |
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| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
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| <li class="blockList"><a name="constructor_detail"> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="TaskEvent(org.apache.ignite.cluster.ClusterNode, java.lang.String, int, org.apache.ignite.lang.IgniteUuid, java.lang.String, java.lang.String, boolean, java.util.UUID)"> |
| <!-- --> |
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| <h4>TaskEvent</h4> |
| <pre>public TaskEvent(<a href="../../../../org/apache/ignite/cluster/ClusterNode.html" title="interface in org.apache.ignite.cluster">ClusterNode</a> node, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> msg, |
| int type, |
| <a href="../../../../org/apache/ignite/lang/IgniteUuid.html" title="class in org.apache.ignite.lang">IgniteUuid</a> sesId, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> taskName, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> taskClsName, |
| boolean internal, |
| @Nullable |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a> subjId)</pre> |
| <div class="block">Creates task event with given parameters.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>node</code> - Node.</dd><dd><code>msg</code> - Optional message.</dd><dd><code>type</code> - Event type.</dd><dd><code>sesId</code> - Task session ID.</dd><dd><code>taskName</code> - Task name.</dd><dd><code>subjId</code> - Subject ID.</dd></dl> |
| </li> |
| </ul> |
| </li> |
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| <h3>Method Detail</h3> |
| <a name="shortDisplay()"> |
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| <h4>shortDisplay</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> shortDisplay()</pre> |
| <div class="block">Gets a shortened version of <code>toString()</code> result. Suitable for humans to read.</div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../org/apache/ignite/events/Event.html#shortDisplay()">shortDisplay</a></code> in interface <code><a href="../../../../org/apache/ignite/events/Event.html" title="interface in org.apache.ignite.events">Event</a></code></dd> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="../../../../org/apache/ignite/events/EventAdapter.html#shortDisplay()">shortDisplay</a></code> in class <code><a href="../../../../org/apache/ignite/events/EventAdapter.html" title="class in org.apache.ignite.events">EventAdapter</a></code></dd> |
| <dt><span class="strong">Returns:</span></dt><dd>Shortened version of <code>toString()</code> result.</dd></dl> |
| </li> |
| </ul> |
| <a name="taskName()"> |
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| <h4>taskName</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> taskName()</pre> |
| <div class="block">Gets name of the task that triggered the event.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Name of the task that triggered the event.</dd></dl> |
| </li> |
| </ul> |
| <a name="taskClassName()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>taskClassName</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> taskClassName()</pre> |
| <div class="block">Gets name of task class that triggered this event.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Name of task class that triggered the event.</dd></dl> |
| </li> |
| </ul> |
| <a name="taskSessionId()"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>taskSessionId</h4> |
| <pre>public <a href="../../../../org/apache/ignite/lang/IgniteUuid.html" title="class in org.apache.ignite.lang">IgniteUuid</a> taskSessionId()</pre> |
| <div class="block">Gets session ID of the task that triggered the event.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Session ID of the task that triggered the event.</dd></dl> |
| </li> |
| </ul> |
| <a name="internal()"> |
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| <h4>internal</h4> |
| <pre>public boolean internal()</pre> |
| <div class="block">Returns <code>true</code> if task is created by Ignite and is used for system needs.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd><code>True</code> if task is created by Ignite and is used for system needs.</dd></dl> |
| </li> |
| </ul> |
| <a name="subjectId()"> |
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| <h4>subjectId</h4> |
| <pre>@Nullable |
| public <a href="http://docs.oracle.com/javase/7/docs/api/java/util/UUID.html?is-external=true" title="class or interface in java.util">UUID</a> subjectId()</pre> |
| <div class="block">Gets security subject ID initiated this task event, if available. This property |
| is not available for GridEventType#EVT_TASK_SESSION_ATTR_SET task event. |
| <p> |
| Subject ID will be set either to node ID or client ID initiated |
| task execution.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Subject ID.</dd></dl> |
| </li> |
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| <h4>toString</h4> |
| <pre>public <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> toString()</pre> |
| <dl> |
| <dt><strong>Overrides:</strong></dt> |
| <dd><code><a href="../../../../org/apache/ignite/events/EventAdapter.html#toString()">toString</a></code> in class <code><a href="../../../../org/apache/ignite/events/EventAdapter.html" title="class in org.apache.ignite.events">EventAdapter</a></code></dd> |
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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 © 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>Ignite Fabric</b> </td> <td>: ver. <strong>1.1.0-incubating</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: May 20 2015 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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