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| <div class="subTitle">org.apache.hadoop.hbase.wal</div> |
| <h2 title="Class AbstractWALRoller" class="title">Class AbstractWALRoller<T extends <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a>></h2> |
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| <li>org.apache.hadoop.hbase.wal.AbstractWALRoller<T></li> |
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| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/hadoop/hbase/regionserver/LogRoller.html" title="class in org.apache.hadoop.hbase.regionserver">LogRoller</a>, <a href="../../../../../org/apache/hadoop/hbase/master/region/MasterRegionWALRoller.html" title="class in org.apache.hadoop.hbase.master.region">MasterRegionWALRoller</a></dd> |
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| <br> |
| <pre>@InterfaceAudience.Private |
| public abstract class <a href="../../../../../src-html/org/apache/hadoop/hbase/wal/AbstractWALRoller.html#line.57">AbstractWALRoller</a><T extends <a href="../../../../../org/apache/hadoop/hbase/Abortable.html" title="interface in org.apache.hadoop.hbase">Abortable</a>> |
| extends <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> |
| implements <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></pre> |
| <div class="block">Runs periodically to determine if the WAL should be rolled. |
| <p/> |
| NOTE: This class extends Thread rather than Chore because the sleep time can be interrupted when |
| there is something to do, rather than the Chore sleep time which is invariant. |
| <p/> |
| The <a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#scheduleFlush-java.lang.String-java.util.List-"><code>scheduleFlush(String, List)</code></a> is abstract here, |
| as sometimes we hold a region without a region server but we still want to roll its WAL. |
| <p/> |
| TODO: change to a pool of threads</div> |
| </li> |
| </ul> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>protected class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.RollController.html" title="class in org.apache.hadoop.hbase.wal">AbstractWALRoller.RollController</a></span></code> |
| <div class="block">Independently control the roll of each wal.</div> |
| </td> |
| </tr> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Thread.State.html?is-external=true" title="class or interface in java.lang">Thread.State</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Thread.UncaughtExceptionHandler.html?is-external=true" title="class or interface in java.lang">Thread.UncaughtExceptionHandler</a></code></li> |
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| <h3>Field Summary</h3> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html" title="type parameter in AbstractWALRoller">T</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#abortable">abortable</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#checkLowReplicationInterval">checkLowReplicationInterval</a></span></code> </td> |
| </tr> |
| <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/wal/AbstractWALRoller.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#rollPeriod">rollPeriod</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#running">running</a></span></code> </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/wal/AbstractWALRoller.html#threadWakeFrequency">threadWakeFrequency</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected 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/wal/AbstractWALRoller.html#WAL_ROLL_PERIOD_KEY">WAL_ROLL_PERIOD_KEY</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentMap.html?is-external=true" title="class or interface in java.util.concurrent">ConcurrentMap</a><<a href="../../../../../org/apache/hadoop/hbase/wal/WAL.html" title="interface in org.apache.hadoop.hbase.wal">WAL</a>,<a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.RollController.html" title="class in org.apache.hadoop.hbase.wal">AbstractWALRoller.RollController</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#wals">wals</a></span></code> </td> |
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| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#AbstractWALRoller-java.lang.String-org.apache.hadoop.conf.Configuration-T-">AbstractWALRoller</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> name, |
| org.apache.hadoop.conf.Configuration conf, |
| <a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html" title="type parameter in AbstractWALRoller">T</a> abortable)</code> </td> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#abort-java.lang.String-java.lang.Throwable-">abort</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> reason, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a> cause)</code> </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/wal/AbstractWALRoller.html#addWAL-org.apache.hadoop.hbase.wal.WAL-">addWAL</a></span>(<a href="../../../../../org/apache/hadoop/hbase/wal/WAL.html" title="interface in org.apache.hadoop.hbase.wal">WAL</a> wal)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#afterWALArchive-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">afterWALArchive</a></span>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#checkLowReplication-long-">checkLowReplication</a></span>(long now)</code> |
| <div class="block">we need to check low replication in period, see HBASE-18132</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/wal/AbstractWALRoller.html#close--">close</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#isWaiting--">isWaiting</a></span>()</code> </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/wal/AbstractWALRoller.html#requestRollAll--">requestRollAll</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#run--">run</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>protected abstract void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#scheduleFlush-java.lang.String-java.util.List-">scheduleFlush</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> encodedRegionName, |
| <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><byte[]> families)</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#waitUntilWalRollFinished--">waitUntilWalRollFinished</a></span>()</code> |
| <div class="block">Wait until all wals have been rolled after calling <a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#requestRollAll--"><code>requestRollAll()</code></a>.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/wal/AbstractWALRoller.html#walRollFinished--">walRollFinished</a></span>()</code> </td> |
| </tr> |
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| <h3>Methods inherited from class java.lang.<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></h3> |
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