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| <div class="subTitle">org.apache.hadoop.hbase.procedure2</div> |
| <h2 title="Interface ProcedureScheduler" class="title">Interface ProcedureScheduler</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/procedure2/AbstractProcedureScheduler.html" title="class in org.apache.hadoop.hbase.procedure2">AbstractProcedureScheduler</a>, <a href="../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureScheduler.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureScheduler</a>, <a href="../../../../../org/apache/hadoop/hbase/procedure2/SimpleProcedureScheduler.html" title="class in org.apache.hadoop.hbase.procedure2">SimpleProcedureScheduler</a></dd> |
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| <pre>@InterfaceAudience.Private |
| public interface <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.31">ProcedureScheduler</a></pre> |
| <div class="block">Keep track of the runnable procedures</div> |
| </li> |
| </ul> |
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| <div class="summary"> |
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| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <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></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>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#addBack-org.apache.hadoop.hbase.procedure2.Procedure-">addBack</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</code> |
| <div class="block">Inserts the specified element at the end of this queue.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#addBack-org.apache.hadoop.hbase.procedure2.Procedure-boolean-">addBack</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc, |
| boolean notify)</code> |
| <div class="block">Inserts the specified element at the end of this queue.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#addFront-java.util.Iterator-">addFront</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a>> procedureIterator)</code> |
| <div class="block">Inserts all elements in the iterator at the front of this queue.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#addFront-org.apache.hadoop.hbase.procedure2.Procedure-">addFront</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</code> |
| <div class="block">Inserts the specified element at the front of this queue.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#addFront-org.apache.hadoop.hbase.procedure2.Procedure-boolean-">addFront</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc, |
| boolean notify)</code> |
| <div class="block">Inserts the specified element at the front of this queue.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#clear--">clear</a></span>()</code> |
| <div class="block">Clear current state of scheduler such that it is equivalent to newly created scheduler.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#completionCleanup-org.apache.hadoop.hbase.procedure2.Procedure-">completionCleanup</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</code> |
| <div class="block">The procedure in execution completed.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResource.html" title="class in org.apache.hadoop.hbase.procedure2">LockedResource</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#getLockResource-org.apache.hadoop.hbase.procedure2.LockedResourceType-java.lang.String-">getLockResource</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResourceType.html" title="enum in org.apache.hadoop.hbase.procedure2">LockedResourceType</a> resourceType, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> resourceName)</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResource.html" title="class in org.apache.hadoop.hbase.procedure2">LockedResource</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#getLocks--">getLocks</a></span>()</code> |
| <div class="block">List lock queues.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#hasRunnables--">hasRunnables</a></span>()</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#poll--">poll</a></span>()</code> |
| <div class="block">Fetch one Procedure from the queue</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#poll-long-java.util.concurrent.TimeUnit-">poll</a></span>(long timeout, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/TimeUnit.html?is-external=true" title="class or interface in java.util.concurrent">TimeUnit</a> unit)</code> |
| <div class="block">Fetch one Procedure from the queue</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#signalAll--">signalAll</a></span>()</code> |
| <div class="block">In case the class is blocking on poll() waiting for items to be added, |
| this method should awake poll() and poll() should return.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#size--">size</a></span>()</code> |
| <div class="block">Returns the number of elements in this queue.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#start--">start</a></span>()</code> |
| <div class="block">Start the scheduler</div> |
| </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#stop--">stop</a></span>()</code> |
| <div class="block">Stop the scheduler</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#yield-org.apache.hadoop.hbase.procedure2.Procedure-">yield</a></span>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</code> |
| <div class="block">The procedure can't run at the moment.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="start--"> |
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| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>start</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.35">start</a>()</pre> |
| <div class="block">Start the scheduler</div> |
| </li> |
| </ul> |
| <a name="stop--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>stop</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.40">stop</a>()</pre> |
| <div class="block">Stop the scheduler</div> |
| </li> |
| </ul> |
| <a name="signalAll--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>signalAll</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.46">signalAll</a>()</pre> |
| <div class="block">In case the class is blocking on poll() waiting for items to be added, |
| this method should awake poll() and poll() should return.</div> |
| </li> |
| </ul> |
| <a name="addFront-org.apache.hadoop.hbase.procedure2.Procedure-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addFront</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.52">addFront</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</pre> |
| <div class="block">Inserts the specified element at the front of this queue.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proc</code> - the Procedure to add</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addFront-org.apache.hadoop.hbase.procedure2.Procedure-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addFront</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.59">addFront</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc, |
| boolean notify)</pre> |
| <div class="block">Inserts the specified element at the front of this queue.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proc</code> - the Procedure to add</dd> |
| <dd><code>notify</code> - whether need to notify worker</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addFront-java.util.Iterator-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addFront</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.64">addFront</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a>> procedureIterator)</pre> |
| <div class="block">Inserts all elements in the iterator at the front of this queue.</div> |
| </li> |
| </ul> |
| <a name="addBack-org.apache.hadoop.hbase.procedure2.Procedure-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addBack</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.70">addBack</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</pre> |
| <div class="block">Inserts the specified element at the end of this queue.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proc</code> - the Procedure to add</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="addBack-org.apache.hadoop.hbase.procedure2.Procedure-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addBack</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.77">addBack</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc, |
| boolean notify)</pre> |
| <div class="block">Inserts the specified element at the end of this queue.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proc</code> - the Procedure to add</dd> |
| <dd><code>notify</code> - whether need to notify worker</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="yield-org.apache.hadoop.hbase.procedure2.Procedure-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>yield</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.84">yield</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</pre> |
| <div class="block">The procedure can't run at the moment. |
| add it back to the queue, giving priority to someone else.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proc</code> - the Procedure to add back to the list</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="completionCleanup-org.apache.hadoop.hbase.procedure2.Procedure-"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>completionCleanup</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.91">completionCleanup</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> proc)</pre> |
| <div class="block">The procedure in execution completed. |
| This can be implemented to perform cleanups.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>proc</code> - the Procedure that completed the execution.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="hasRunnables--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>hasRunnables</h4> |
| <pre>boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.96">hasRunnables</a>()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if there are procedures available to process, otherwise false.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="poll--"> |
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| </a> |
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| <li class="blockList"> |
| <h4>poll</h4> |
| <pre><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.102">poll</a>()</pre> |
| <div class="block">Fetch one Procedure from the queue</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the Procedure to execute, or null if nothing present.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="poll-long-java.util.concurrent.TimeUnit-"> |
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| </a> |
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| <h4>poll</h4> |
| <pre><a href="../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.110">poll</a>(long timeout, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/TimeUnit.html?is-external=true" title="class or interface in java.util.concurrent">TimeUnit</a> unit)</pre> |
| <div class="block">Fetch one Procedure from the queue</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>timeout</code> - how long to wait before giving up, in units of unit</dd> |
| <dd><code>unit</code> - a TimeUnit determining how to interpret the timeout parameter</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the Procedure to execute, or null if nothing present.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getLocks--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getLocks</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResource.html" title="class in org.apache.hadoop.hbase.procedure2">LockedResource</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.116">getLocks</a>()</pre> |
| <div class="block">List lock queues.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the locks</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getLockResource-org.apache.hadoop.hbase.procedure2.LockedResourceType-java.lang.String-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>getLockResource</h4> |
| <pre><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResource.html" title="class in org.apache.hadoop.hbase.procedure2">LockedResource</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.122">getLockResource</a>(<a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResourceType.html" title="enum in org.apache.hadoop.hbase.procedure2">LockedResourceType</a> resourceType, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> resourceName)</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/procedure2/LockedResource.html" title="class in org.apache.hadoop.hbase.procedure2"><code>LockedResource</code></a> for resource of specified type & name. null if resource is not |
| locked.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="size--"> |
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| <h4>size</h4> |
| <pre>int <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.129">size</a>()</pre> |
| <div class="block">Returns the number of elements in this queue.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of elements in this queue.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="clear--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>clear</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/procedure2/ProcedureScheduler.html#line.137">clear</a>()</pre> |
| <div class="block">Clear current state of scheduler such that it is equivalent to newly created scheduler. |
| Used for testing failure and recovery. To emulate server crash/restart, |
| <a href="../../../../../org/apache/hadoop/hbase/procedure2/ProcedureExecutor.html" title="class in org.apache.hadoop.hbase.procedure2"><code>ProcedureExecutor</code></a> resets its own state and calls clear() on scheduler.</div> |
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