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| <div class="subTitle">org.apache.hadoop.hbase.master.snapshot</div> |
| <h2 title="Class EnabledTableSnapshotHandler" class="title">Class EnabledTableSnapshotHandler</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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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> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.master.snapshot.EnabledTableSnapshotHandler</li> |
| </ul> |
| </li> |
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| </dl> |
| <hr> |
| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.47">EnabledTableSnapshotHandler</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">Handle the master side of taking a snapshot of an online table, regardless of snapshot type. |
| Uses a <a href="../../../../../../org/apache/hadoop/hbase/procedure/Procedure.html" title="class in org.apache.hadoop.hbase.procedure"><code>Procedure</code></a> to run the snapshot across all the involved region servers.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/procedure/ProcedureCoordinator.html" title="class in org.apache.hadoop.hbase.procedure"><code>ProcedureCoordinator</code></a></dd> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/procedure/ProcedureCoordinator.html" title="class in org.apache.hadoop.hbase.procedure">ProcedureCoordinator</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#coordinator">coordinator</a></span></code> </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/master/snapshot/EnabledTableSnapshotHandler.html#LOG">LOG</a></span></code> </td> |
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| <h3>Fields inherited from class 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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| <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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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#EnabledTableSnapshotHandler-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.master.snapshot.SnapshotManager-">EnabledTableSnapshotHandler</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription snapshot, |
| <a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a> master, |
| <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html" title="class in org.apache.hadoop.hbase.master.snapshot">SnapshotManager</a> manager)</code> </td> |
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| <h3>Method Summary</h3> |
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| <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="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> |
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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/EnabledTableSnapshotHandler.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/EnabledTableSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">EnabledTableSnapshotHandler</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.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>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#snapshotMobRegion-org.apache.hadoop.hbase.client.RegionInfo-">snapshotMobRegion</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code> |
| <div class="block">Takes a snapshot of the mob region</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.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><<a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><<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>>> regions)</code> |
| <div class="block">This method kicks off a snapshot procedure.</div> |
| </td> |
| </tr> |
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| <h3>Methods inherited from class 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 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 org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.49">LOG</a></pre> |
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| <h4>coordinator</h4> |
| <pre>private final <a href="../../../../../../org/apache/hadoop/hbase/procedure/ProcedureCoordinator.html" title="class in org.apache.hadoop.hbase.procedure">ProcedureCoordinator</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.50">coordinator</a></pre> |
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| <h3>Constructor Detail</h3> |
| <a name="EnabledTableSnapshotHandler-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>EnabledTableSnapshotHandler</h4> |
| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.52">EnabledTableSnapshotHandler</a>(org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription snapshot, |
| <a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a> master, |
| <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html" title="class in org.apache.hadoop.hbase.master.snapshot">SnapshotManager</a> manager) |
| 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="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> |
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| <h4>prepare</h4> |
| <pre>public <a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">EnabledTableSnapshotHandler</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.59">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: <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> in class <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>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.72">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><<a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><<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>>> regions) |
| 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">This method kicks off a snapshot procedure. Other than that it hangs around for various |
| phases to complete.</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> in class <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> |
| </dl> |
| </li> |
| </ul> |
| <a name="snapshotMobRegion-org.apache.hadoop.hbase.client.RegionInfo-"> |
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| <h4>snapshotMobRegion</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.128">snapshotMobRegion</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo) |
| 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">Takes a snapshot of the mob region</div> |
| <dl> |
| <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> |
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| <a name="downgradeToSharedTableLock--"> |
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| <h4>downgradeToSharedTableLock</h4> |
| <pre>protected boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/EnabledTableSnapshotHandler.html#line.136">downgradeToSharedTableLock</a>()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <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> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html#downgradeToSharedTableLock--">downgradeToSharedTableLock</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/TakeSnapshotHandler.html" title="class in org.apache.hadoop.hbase.master.snapshot">TakeSnapshotHandler</a></code></dd> |
| </dl> |
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