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<div class="subTitle">org.apache.hadoop.hbase.monitoring</div>
<h2 title="Class TaskMonitor" class="title">Class TaskMonitor</h2>
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<li>org.apache.hadoop.hbase.monitoring.TaskMonitor</li>
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<pre>@InterfaceAudience.Private
public class <a href="../../../../../src-html/org/apache/hadoop/hbase/monitoring/TaskMonitor.html#line.47">TaskMonitor</a>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block">Singleton which keeps track of tasks going on in this VM.
A Task here is anything which takes more than a few seconds
and the user might want to inquire about the status</div>
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<caption><span>Nested Classes</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.MonitorRunnable.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor.MonitorRunnable</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.PassthroughInvocationHandler.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor.PassthroughInvocationHandler</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.PassthroughInvocationHandler.html" title="type parameter in TaskMonitor.PassthroughInvocationHandler">T</a>&gt;</span></code>
<div class="block">An InvocationHandler that simply passes through calls to the original
object.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.TaskAndWeakRefPair.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor.TaskAndWeakRefPair</a></span></code>
<div class="block">This class encapsulates an object as well as a weak reference to a proxy
that passes through calls to that object.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static interface&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.TaskFilter.html" title="interface in org.apache.hadoop.hbase.monitoring">TaskMonitor.TaskFilter</a></span></code>&nbsp;</td>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#DEFAULT_EXPIRATION_TIME">DEFAULT_EXPIRATION_TIME</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#DEFAULT_MAX_TASKS">DEFAULT_MAX_TASKS</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#DEFAULT_MONITOR_INTERVAL">DEFAULT_MONITOR_INTERVAL</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#DEFAULT_RPC_WARN_TIME">DEFAULT_RPC_WARN_TIME</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#EXPIRATION_TIME_KEY">EXPIRATION_TIME_KEY</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#expirationTime">expirationTime</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static <a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#instance">instance</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#LOG">LOG</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#MAX_TASKS_KEY">MAX_TASKS_KEY</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#maxTasks">maxTasks</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#MONITOR_INTERVAL_KEY">MONITOR_INTERVAL_KEY</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#monitorInterval">monitorInterval</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Thread.html?is-external=true" title="class or interface in java.lang">Thread</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#monitorThread">monitorThread</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#RPC_WARN_TIME_KEY">RPC_WARN_TIME_KEY</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <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>&lt;<a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.TaskAndWeakRefPair.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor.TaskAndWeakRefPair</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#rpcTasks">rpcTasks</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#rpcWarnTime">rpcWarnTime</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private org.apache.hbase.thirdparty.org.apache.commons.collections4.queue.CircularFifoQueue</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#tasks">tasks</a></span></code>&nbsp;</td>
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<tr>
<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#TaskMonitor-org.apache.hadoop.conf.Configuration-">TaskMonitor</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#canPurge-org.apache.hadoop.hbase.monitoring.MonitoredTask-">canPurge</a></span>(<a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredTask.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredTask</a>&nbsp;stat)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredRPCHandler.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredRPCHandler</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#createRPCStatus-java.lang.String-">createRPCStatus</a></span>(<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>&nbsp;description)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredTask.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredTask</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#createStatus-java.lang.String-">createStatus</a></span>(<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>&nbsp;description)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredTask.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredTask</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#createStatus-java.lang.String-boolean-">createStatus</a></span>(<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>&nbsp;description,
boolean&nbsp;ignore)</code>&nbsp;</td>
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<td class="colFirst"><code>private static <a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.TaskFilter.html" title="interface in org.apache.hadoop.hbase.monitoring">TaskMonitor.TaskFilter</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#createTaskFilter-java.lang.String-">createTaskFilter</a></span>(<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>&nbsp;filter)</code>
<div class="block">Create a task filter according to a given filter type.</div>
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<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/monitoring/TaskMonitor.html#dumpAsText-java.io.PrintWriter-">dumpAsText</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintWriter.html?is-external=true" title="class or interface in java.io">PrintWriter</a>&nbsp;out)</code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#get--">get</a></span>()</code>
<div class="block">Get singleton instance.</div>
</td>
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<tr id="i7" class="rowColor">
<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>&lt;<a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredTask.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredTask</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#getTasks--">getTasks</a></span>()</code>
<div class="block">Produces a list containing copies of the current state of all non-expired
MonitoredTasks handled by this TaskMonitor.</div>
</td>
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<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>&lt;<a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredTask.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredTask</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#getTasks-java.lang.String-">getTasks</a></span>(<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>&nbsp;filter)</code>
<div class="block">Produces a list containing copies of the current state of all non-expired
MonitoredTasks handled by this TaskMonitor.</div>
</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>private static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#processTasks-java.lang.Iterable-org.apache.hadoop.hbase.monitoring.TaskMonitor.TaskFilter-java.util.List-">processTasks</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.TaskAndWeakRefPair.html" title="class in org.apache.hadoop.hbase.monitoring">TaskMonitor.TaskAndWeakRefPair</a>&gt;&nbsp;tasks,
<a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.TaskFilter.html" title="interface in org.apache.hadoop.hbase.monitoring">TaskMonitor.TaskFilter</a>&nbsp;filter,
<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>&lt;<a href="../../../../../org/apache/hadoop/hbase/monitoring/MonitoredTask.html" title="interface in org.apache.hadoop.hbase.monitoring">MonitoredTask</a>&gt;&nbsp;results)</code>&nbsp;</td>
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<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#purgeExpiredTasks--">purgeExpiredTasks</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#shutdown--">shutdown</a></span>()</code>&nbsp;</td>
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<tr id="i12" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/monitoring/TaskMonitor.html#warnStuckTasks--">warnStuckTasks</a></span>()</code>&nbsp;</td>
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TODO this would be better off scoped to a single daemon</div>
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