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<div class="subTitle">org.apache.hadoop.hbase.master.snapshot</div>
<h2 title="Class DisabledTableSnapshotHandler" class="title">Class DisabledTableSnapshotHandler</h2>
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<li><a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html" title="class in org.apache.hadoop.hbase.executor">org.apache.hadoop.hbase.executor.EventHandler</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">org.apache.hadoop.hbase.master.snapshot.TakeSnapshotHandler</a></li>
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<ul class="inheritance">
<li>org.apache.hadoop.hbase.master.snapshot.DisabledTableSnapshotHandler</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html" title="class in org.apache.hadoop.hbase.executor">EventHandler</a>&gt;, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang">Runnable</a>, <a href="../../../../../../org/apache/hadoop/hbase/errorhandling/ForeignExceptionSnare.html" title="interface in org.apache.hadoop.hbase.errorhandling">ForeignExceptionSnare</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html" title="interface in org.apache.hadoop.hbase.master">SnapshotSentinel</a></dd>
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<pre>@InterfaceAudience.Private
@InterfaceStability.Evolving
public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#line.51">DisabledTableSnapshotHandler</a>
extends <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></pre>
<div class="block">Take a snapshot of a disabled table.
<p>
Table must exist when taking the snapshot, or results are undefined.</div>
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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>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#LOG">LOG</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.hadoop.hbase.master.snapshot.<a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></h3>
<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#conf">conf</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#htd">htd</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#master">master</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#metricsSnapshot">metricsSnapshot</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#monitor">monitor</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#rootDir">rootDir</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#rootFs">rootFs</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshot">snapshot</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshotManager">snapshotManager</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshotManifest">snapshotManifest</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshotTable">snapshotTable</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#status">status</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#workingDir">workingDir</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#workingDirFs">workingDirFs</a></code></li>
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<h3>Fields inherited from class&nbsp;org.apache.hadoop.hbase.executor.<a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html" title="class in org.apache.hadoop.hbase.executor">EventHandler</a></h3>
<code><a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#eventType">eventType</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#seqids">seqids</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#server">server</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#waitingTimeForEvents">waitingTimeForEvents</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#DisabledTableSnapshotHandler-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.master.snapshot.SnapshotManager-">DisabledTableSnapshotHandler</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription&nbsp;snapshot,
<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;masterServices,
<a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html" title="class in org.apache.hadoop.hbase.master.snapshot">SnapshotManager</a>&nbsp;snapshotManager)</code>&nbsp;</td>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#downgradeToSharedTableLock--">downgradeToSharedTableLock</a></span>()</code>
<div class="block">When taking snapshot, first we must acquire the exclusive table lock to confirm that there are
no ongoing merge/split procedures.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">DisabledTableSnapshotHandler</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#prepare--">prepare</a></span>()</code>
<div class="block">Event handlers should do all the necessary checks in this method (rather than
in the constructor, or in process()) so that the caller, which is mostly executed
in the ipc context can fail fast.</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/master/snapshot/DisabledTableSnapshotHandler.html#snapshotRegions-java.util.List-">snapshotRegions</a></span>(<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/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&gt;&gt;&nbsp;regionsAndLocations)</code>
<div class="block">Snapshot the specified regions</div>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.hbase.master.snapshot.<a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></h3>
<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#cancel-java.lang.String-">cancel</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#getCompletionTimestamp--">getCompletionTimestamp</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#getException--">getException</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#getExceptionIfFailed--">getExceptionIfFailed</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#getSnapshot--">getSnapshot</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#hasException--">hasException</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#isFinished--">isFinished</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#process--">process</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#rethrowException--">rethrowException</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#rethrowExceptionIfFailed--">rethrowExceptionIfFailed</a>, <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshotDisabledRegion-org.apache.hadoop.hbase.client.RegionInfo-">snapshotDisabledRegion</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.hbase.executor.<a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html" title="class in org.apache.hadoop.hbase.executor">EventHandler</a></h3>
<code><a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#compareTo-org.apache.hadoop.hbase.executor.EventHandler-">compareTo</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#getEventType--">getEventType</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#getInformativeName--">getInformativeName</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#getPriority--">getPriority</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#getSeqid--">getSeqid</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#handleException-java.lang.Throwable-">handleException</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#run--">run</a>, <a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#toString--">toString</a></code></li>
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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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<h4>LOG</h4>
<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#line.52">LOG</a></pre>
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<a name="DisabledTableSnapshotHandler-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.master.snapshot.SnapshotManager-">
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<h4>DisabledTableSnapshotHandler</h4>
<pre>public&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#line.60">DisabledTableSnapshotHandler</a>(org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription&nbsp;snapshot,
<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;masterServices,
<a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html" title="class in org.apache.hadoop.hbase.master.snapshot">SnapshotManager</a>&nbsp;snapshotManager)
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>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>snapshot</code> - descriptor of the snapshot to take</dd>
<dd><code>masterServices</code> - master services provider</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> - if it cannot access the filesystem of the snapshot
temporary directory</dd>
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<a name="prepare--">
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<h4>prepare</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">DisabledTableSnapshotHandler</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#line.67">prepare</a>()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/executor/EventHandler.html#prepare--">EventHandler</a></code></span></div>
<div class="block">Event handlers should do all the necessary checks in this method (rather than
in the constructor, or in process()) so that the caller, which is mostly executed
in the ipc context can fail fast. Process is executed async from the client ipc,
so this method gives a quick chance to do some basic checks.
Should be called after constructing the EventHandler, and before process().</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#prepare--">prepare</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the instance of this class</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code> - when something goes wrong</dd>
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<h4>snapshotRegions</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#line.74">snapshotRegions</a>(<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/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>,<a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&gt;&gt;&nbsp;regionsAndLocations)
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>,
org.apache.zookeeper.KeeperException</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshotRegions-java.util.List-">TakeSnapshotHandler</a></code></span></div>
<div class="block">Snapshot the specified regions</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#snapshotRegions-java.util.List-">snapshotRegions</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></code></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>
<dd><code>org.apache.zookeeper.KeeperException</code></dd>
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<h4>downgradeToSharedTableLock</h4>
<pre>protected&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html#line.128">downgradeToSharedTableLock</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#downgradeToSharedTableLock--">TakeSnapshotHandler</a></code></span></div>
<div class="block">When taking snapshot, first we must acquire the exclusive table lock to confirm that there are
no ongoing merge/split procedures. But later, we should try our best to release the exclusive
lock as this may hurt the availability, because we need to hold the shared lock when assigning
regions.
<p/>
See HBASE-21480 for more details.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#downgradeToSharedTableLock--">downgradeToSharedTableLock</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></code></dd>
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