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| <div class="subTitle">org.apache.hadoop.hbase.procedure2</div> |
| <h2 title="Class ProcedureInMemoryChore" class="title">Class ProcedureInMemoryChore<TEnvironment></h2> |
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| <li><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">org.apache.hadoop.hbase.procedure2.Procedure</a><TEnvironment></li> |
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| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.procedure2.ProcedureInMemoryChore<TEnvironment></li> |
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| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.DeadServerMetricRegionChore.html" title="class in org.apache.hadoop.hbase.master.assignment">AssignmentManager.DeadServerMetricRegionChore</a>, <a href="../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.RegionInTransitionChore.html" title="class in org.apache.hadoop.hbase.master.assignment">AssignmentManager.RegionInTransitionChore</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/CompletedProcedureCleaner.html" title="class in org.apache.hadoop.hbase.procedure2">CompletedProcedureCleaner</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public abstract class <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.36">ProcedureInMemoryChore</a><TEnvironment> |
| extends <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><TEnvironment></pre> |
| <div class="block">Special procedure used as a chore. |
| Instead of bringing the Chore class in (dependencies reason), |
| we reuse the executor timeout thread for this special case. |
| |
| The assumption is that procedure is used as hook to dispatch other procedures |
| or trigger some cleanups. It does not store state in the ProcedureStore. |
| this is just for in-memory chore executions.</div> |
| </li> |
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| <!-- --> |
| </a> |
| <h3>Nested classes/interfaces inherited from class org.apache.hadoop.hbase.procedure2.<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.LockState.html" title="enum in org.apache.hadoop.hbase.procedure2">Procedure.LockState</a></code></li> |
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| <h3>Fields inherited from class org.apache.hadoop.hbase.procedure2.<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#NO_PROC_ID">NO_PROC_ID</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#NO_TIMEOUT">NO_TIMEOUT</a></code></li> |
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| <h3>Constructor Summary</h3> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colLast" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#ProcedureInMemoryChore-int-">ProcedureInMemoryChore</a></span>(int timeoutMsec)</code> </td> |
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| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#abort-TEnvironment-">abort</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</code> |
| <div class="block">The abort() call is asynchronous and each procedure must decide how to deal |
| with it, if they want to be abortable.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#deserializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">deserializeStateData</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer)</code> |
| <div class="block">Called on store load to allow the user to decode the previously serialized |
| state.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#execute-TEnvironment-">execute</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</code> |
| <div class="block">The main code of the procedure.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected abstract void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#periodicExecute-TEnvironment-">periodicExecute</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#rollback-TEnvironment-">rollback</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</code> |
| <div class="block">The code to undo what was done by the execute() code.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#serializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">serializeStateData</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer)</code> |
| <div class="block">The user-level code of the procedure may have some state to |
| persist (e.g.</div> |
| </td> |
| </tr> |
| </table> |
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| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hadoop.hbase.procedure2.<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a></h3> |
| <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#acquireLock-TEnvironment-">acquireLock</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#addStackIndex-int-">addStackIndex</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#afterReplay-TEnvironment-">afterReplay</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#beforeReplay-TEnvironment-">beforeReplay</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#bypass-TEnvironment-">bypass</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#compareTo-org.apache.hadoop.hbase.procedure2.Procedure-">compareTo</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#completionCleanup-TEnvironment-">completionCleanup</a>, <a 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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| <h3>Constructor Detail</h3> |
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| <h4>ProcedureInMemoryChore</h4> |
| <pre>protected <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.37">ProcedureInMemoryChore</a>(int timeoutMsec)</pre> |
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| <h4>periodicExecute</h4> |
| <pre>protected abstract void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.41">periodicExecute</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</pre> |
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| <h4>execute</h4> |
| <pre>protected <a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>>[] <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.44">execute</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#execute-TEnvironment-">Procedure</a></code></span></div> |
| <div class="block">The main code of the procedure. It must be idempotent since execute() |
| may be called multiple times in case of machine failure in the middle |
| of the execution.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#execute-TEnvironment-">execute</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>env</code> - the environment passed to the ProcedureExecutor</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a set of sub-procedures to run or ourselves if there is more work to do or null if the |
| procedure is done.</dd> |
| </dl> |
| </li> |
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| <h4>rollback</h4> |
| <pre>protected void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.49">rollback</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#rollback-TEnvironment-">Procedure</a></code></span></div> |
| <div class="block">The code to undo what was done by the execute() code. |
| It is called when the procedure or one of the sub-procedures failed or an |
| abort was requested. It should cleanup all the resources created by |
| the execute() call. The implementation must be idempotent since rollback() |
| may be called multiple time in case of machine failure in the middle |
| of the execution.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#rollback-TEnvironment-">rollback</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>env</code> - the environment passed to the ProcedureExecutor</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="abort-java.lang.Object-"> |
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| <h4>abort</h4> |
| <pre>protected boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.54">abort</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a> env)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#abort-TEnvironment-">Procedure</a></code></span></div> |
| <div class="block">The abort() call is asynchronous and each procedure must decide how to deal |
| with it, if they want to be abortable. The simplest implementation |
| is to have an AtomicBoolean set in the abort() method and then the execute() |
| will check if the abort flag is set or not. |
| abort() may be called multiple times from the client, so the implementation |
| must be idempotent. |
| |
| <p>NOTE: abort() is not like Thread.interrupt(). It is just a notification |
| that allows the procedure implementor abort.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#abort-TEnvironment-">abort</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="serializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-"> |
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| <h4>serializeStateData</h4> |
| <pre>protected void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.59">serializeStateData</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#serializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">Procedure</a></code></span></div> |
| <div class="block">The user-level code of the procedure may have some state to |
| persist (e.g. input arguments or current position in the processing state) to |
| be able to resume on failure.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#serializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">serializeStateData</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>serializer</code> - stores the serializable state</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>deserializeStateData</h4> |
| <pre>protected void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html#line.64">deserializeStateData</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#deserializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">Procedure</a></code></span></div> |
| <div class="block">Called on store load to allow the user to decode the previously serialized |
| state.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#deserializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">deserializeStateData</a></code> in class <code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureInMemoryChore.html" title="type parameter in ProcedureInMemoryChore">TEnvironment</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>serializer</code> - contains the serialized state</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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