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<h2 title="Interface SnapshotSentinel" class="title">Interface SnapshotSentinel</h2>
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<dd><a href="../../../../../org/apache/hadoop/hbase/master/snapshot/DisabledTableSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">DisabledTableSnapshotHandler</a>, <a href="../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">EnabledTableSnapshotHandler</a>, <a href="../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></dd>
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<pre>@InterfaceAudience.Private
@InterfaceStability.Unstable
public interface <a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.30">SnapshotSentinel</a></pre>
<div class="block">Watch the current snapshot under process</div>
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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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<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/master/SnapshotSentinel.html#cancel-java.lang.String-">cancel</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;why)</code>
<div class="block">Actively cancel a running snapshot.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#getCompletionTimestamp--">getCompletionTimestamp</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/errorhandling/ForeignException.html" title="class in org.apache.hadoop.hbase.errorhandling">ForeignException</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#getExceptionIfFailed--">getExceptionIfFailed</a></span>()</code>
<div class="block">Get the exception that caused the snapshot to fail, if the snapshot has failed.</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#getSnapshot--">getSnapshot</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#isFinished--">isFinished</a></span>()</code>
<div class="block">Check to see if the snapshot is finished, where finished may be success or failure.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#rethrowExceptionIfFailed--">rethrowExceptionIfFailed</a></span>()</code>
<div class="block">Rethrow the exception returned by <a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#getExceptionIfFailed--"><code>getExceptionIfFailed()</code></a>.</div>
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<pre>boolean&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.37">isFinished</a>()</pre>
<div class="block">Check to see if the snapshot is finished, where finished may be success or failure.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><tt>false</tt> if the snapshot is still in progress, <tt>true</tt> if the snapshot has
finished</dd>
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<h4>getCompletionTimestamp</h4>
<pre>long&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.42">getCompletionTimestamp</a>()</pre>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>-1 if the snapshot is in progress, otherwise the completion timestamp.</dd>
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<h4>cancel</h4>
<pre>void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.48">cancel</a>(<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;why)</pre>
<div class="block">Actively cancel a running snapshot.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>why</code> - Reason for cancellation.</dd>
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<h4>getSnapshot</h4>
<pre>org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.53">getSnapshot</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the description of the snapshot being run</dd>
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<h4>getExceptionIfFailed</h4>
<pre><a href="../../../../../org/apache/hadoop/hbase/errorhandling/ForeignException.html" title="class in org.apache.hadoop.hbase.errorhandling">ForeignException</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.60">getExceptionIfFailed</a>()</pre>
<div class="block">Get the exception that caused the snapshot to fail, if the snapshot has failed.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><a href="../../../../../org/apache/hadoop/hbase/errorhandling/ForeignException.html" title="class in org.apache.hadoop.hbase.errorhandling"><code>ForeignException</code></a> that caused the snapshot to fail, or <tt>null</tt> if the
snapshot is still in progress or has succeeded</dd>
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<pre>void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/master/SnapshotSentinel.html#line.68">rethrowExceptionIfFailed</a>()
throws <a href="../../../../../org/apache/hadoop/hbase/errorhandling/ForeignException.html" title="class in org.apache.hadoop.hbase.errorhandling">ForeignException</a></pre>
<div class="block">Rethrow the exception returned by <a href="../../../../../org/apache/hadoop/hbase/master/SnapshotSentinel.html#getExceptionIfFailed--"><code>getExceptionIfFailed()</code></a>.
If there is no exception this is a no-op.</div>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../org/apache/hadoop/hbase/errorhandling/ForeignException.html" title="class in org.apache.hadoop.hbase.errorhandling">ForeignException</a></code> - all exceptions from remote sources are procedure exceptions</dd>
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