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| <div class="subTitle">org.apache.hadoop.hbase.regionserver.wal</div> |
| <h2 title="Class FSHLog" class="title">Class FSHLog</h2> |
| </div> |
| <div class="contentContainer"> |
| <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> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></li> |
| <li> |
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| <li>org.apache.hadoop.hbase.regionserver.wal.FSHLog</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><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>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>, <a href="../../../../../../org/apache/hadoop/hbase/replication/regionserver/WALFileLengthProvider.html" title="interface in org.apache.hadoop.hbase.replication.regionserver">WALFileLengthProvider</a>, <a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.html" title="interface in org.apache.hadoop.hbase.wal">WAL</a></dd> |
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| <br> |
| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.73">FSHLog</a> |
| extends <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></pre> |
| <div class="block">The default implementation of FSWAL.</div> |
| </li> |
| </ul> |
| </div> |
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| <tr> |
| <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>(package private) class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.RingBufferEventHandler.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.RingBufferEventHandler</a></span></code> |
| <div class="block">Handler that is run by the disruptor ringbuffer consumer.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.RingBufferExceptionHandler.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.RingBufferExceptionHandler</a></span></code> |
| <div class="block">Exception handler to pass the disruptor ringbuffer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>(package private) static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.SafePointZigZagLatch</a></span></code> |
| <div class="block">This class is used coordinating two threads holding one thread at a 'safe point' while the |
| orchestrating thread does some work that requires the first thread paused: e.g.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SyncRunner.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.SyncRunner</a></span></code> |
| <div class="block">Thread to runs the hdfs sync call.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.hadoop.hbase.wal.WAL"> |
| <!-- --> |
| </a> |
| <h3>Nested classes/interfaces inherited from interface org.apache.hadoop.hbase.wal.<a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.html" title="interface in org.apache.hadoop.hbase.wal">WAL</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.Entry.html" title="class in org.apache.hadoop.hbase.wal">WAL.Entry</a>, <a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.Reader.html" title="interface in org.apache.hadoop.hbase.wal">WAL.Reader</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <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="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicInteger.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicInteger</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#closeErrorCount">closeErrorCount</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/regionserver/wal/FSHLog.html#closeErrorsTolerated">closeErrorsTolerated</a></span></code> |
| <div class="block">Number of log close errors tolerated before we abort</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ExecutorService.html?is-external=true" title="class or interface in java.util.concurrent">ExecutorService</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#closeExecutor">closeExecutor</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicInteger.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicInteger</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#consecutiveLogRolls">consecutiveLogRolls</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#DEFAULT_FSHLOG_WAIT_ON_SHUTDOWN_IN_SECONDS">DEFAULT_FSHLOG_WAIT_ON_SHUTDOWN_IN_SECONDS</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#DEFAULT_LOW_REPLICATION_ROLL_LIMIT">DEFAULT_LOW_REPLICATION_ROLL_LIMIT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#DEFAULT_MAX_BATCH_COUNT">DEFAULT_MAX_BATCH_COUNT</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#DEFAULT_ROLL_ERRORS_TOLERATED">DEFAULT_ROLL_ERRORS_TOLERATED</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#DEFAULT_SYNCER_COUNT">DEFAULT_SYNCER_COUNT</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private com.lmax.disruptor.dsl.Disruptor<<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/RingBufferTruck.html" title="class in org.apache.hadoop.hbase.regionserver.wal">RingBufferTruck</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#disruptor">disruptor</a></span></code> |
| <div class="block">The nexus at which all incoming handlers meet.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#FIXED_OVERHEAD">FIXED_OVERHEAD</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private 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/regionserver/wal/FSHLog.html#FSHLOG_WAIT_ON_SHUTDOWN_IN_SECONDS">FSHLOG_WAIT_ON_SHUTDOWN_IN_SECONDS</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.fs.FSDataOutputStream</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#hdfs_out">hdfs_out</a></span></code> |
| <div class="block">FSDataOutputStream associated with the current SequenceFile.writer</div> |
| </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/regionserver/wal/FSHLog.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private 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/regionserver/wal/FSHLog.html#LOW_REPLICATION_ROLL_LIMIT">LOW_REPLICATION_ROLL_LIMIT</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#lowReplicationRollEnabled">lowReplicationRollEnabled</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#lowReplicationRollLimit">lowReplicationRollLimit</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private 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/regionserver/wal/FSHLog.html#MAX_BATCH_COUNT">MAX_BATCH_COUNT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#minTolerableReplication">minTolerableReplication</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.RingBufferEventHandler.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.RingBufferEventHandler</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#ringBufferEventHandler">ringBufferEventHandler</a></span></code> |
| <div class="block">This fellow is run by the above appendExecutor service but it is all about batching up appends |
| and syncs; it may shutdown without cleaning out the last few appends or syncs.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private 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/regionserver/wal/FSHLog.html#ROLL_ERRORS_TOLERATED">ROLL_ERRORS_TOLERATED</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private 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/regionserver/wal/FSHLog.html#SYNCER_COUNT">SYNCER_COUNT</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private 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/regionserver/wal/FSHLog.html#TOLERABLE_LOW_REPLICATION">TOLERABLE_LOW_REPLICATION</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/regionserver/wal/FSHLog.html#waitOnShutdownInSeconds">waitOnShutdownInSeconds</a></span></code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from class org.apache.hadoop.hbase.regionserver.wal.<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#blocksize">blocksize</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#closed">closed</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#conf">conf</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#coprocessorHost">coprocessorHost</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#DEFAULT_ROLL_ON_SYNC_TIME_MS">DEFAULT_ROLL_ON_SYNC_TIME_MS</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#DEFAULT_SLOW_SYNC_ROLL_INTERVAL_MS">DEFAULT_SLOW_SYNC_ROLL_INTERVAL_MS</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#DEFAULT_SLOW_SYNC_ROLL_THRESHOLD">DEFAULT_SLOW_SYNC_ROLL_THRESHOLD</a>, <a 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href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#ROLL_ON_SYNC_TIME_MS">ROLL_ON_SYNC_TIME_MS</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollOnSyncNs">rollOnSyncNs</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollRequested">rollRequested</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollWriterLock">rollWriterLock</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#sequenceIdAccounting">sequenceIdAccounting</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#shutdown">shutdown</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#SLOW_SYNC_ROLL_INTERVAL_MS">SLOW_SYNC_ROLL_INTERVAL_MS</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#SLOW_SYNC_ROLL_THRESHOLD">SLOW_SYNC_ROLL_THRESHOLD</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#SLOW_SYNC_TIME_MS">SLOW_SYNC_TIME_MS</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#slowSyncCheckInterval">slowSyncCheckInterval</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#slowSyncCount">slowSyncCount</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#slowSyncNs">slowSyncNs</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#slowSyncRollThreshold">slowSyncRollThreshold</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#totalLogSize">totalLogSize</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#useHsync">useHsync</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#WAL_ROLL_MULTIPLIER">WAL_ROLL_MULTIPLIER</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#WAL_SYNC_TIMEOUT_MS">WAL_SYNC_TIMEOUT_MS</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#walArchiveDir">walArchiveDir</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#walDir">walDir</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#walFile2Props">walFile2Props</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#walFilePrefix">walFilePrefix</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#walFileSuffix">walFileSuffix</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#writer">writer</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>Constructor Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <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/regionserver/wal/FSHLog.html#FSHLog-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-java.lang.String-org.apache.hadoop.conf.Configuration-">FSHLog</a></span>(org.apache.hadoop.fs.FileSystem fs, |
| org.apache.hadoop.fs.Path root, |
| <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> logDir, |
| org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Constructor.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#FSHLog-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-java.lang.String-java.lang.String-org.apache.hadoop.conf.Configuration-java.util.List-boolean-java.lang.String-java.lang.String-">FSHLog</a></span>(org.apache.hadoop.fs.FileSystem fs, |
| org.apache.hadoop.fs.Path rootDir, |
| <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> logDir, |
| <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> archiveDir, |
| org.apache.hadoop.conf.Configuration conf, |
| <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/regionserver/wal/WALActionsListener.html" title="interface in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener</a>> listeners, |
| boolean failIfWALExists, |
| <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> prefix, |
| <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> suffix)</code> |
| <div class="block">Create an edit log at the given <code>dir</code> location.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <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> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#afterCreatingZigZagLatch--">afterCreatingZigZagLatch</a></span>()</code> |
| <div class="block">Used to manufacture race condition reliably.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#append-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKeyImpl-org.apache.hadoop.hbase.wal.WALEdit-boolean-">append</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hri, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALKeyImpl.html" title="class in org.apache.hadoop.hbase.wal">WALKeyImpl</a> key, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> edits, |
| boolean inMemstore)</code> |
| <div class="block">Append a set of edits to the WAL.</div> |
| </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/regionserver/wal/FSHLog.html#beforeWaitOnSafePoint--">beforeWaitOnSafePoint</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#checkLogRoll--">checkLogRoll</a></span>()</code> |
| <div class="block">Schedule a log roll if needed.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#closeWriter-org.apache.hadoop.hbase.wal.WALProvider.Writer-org.apache.hadoop.fs.Path-boolean-">closeWriter</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> writer, |
| org.apache.hadoop.fs.Path path, |
| boolean syncCloseCall)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#createWriterInstance-org.apache.hadoop.fs.Path-">createWriterInstance</a></span>(org.apache.hadoop.fs.Path path)</code> |
| <div class="block">This method allows subclasses to inject different writers without having to extend other |
| methods like rollWriter().</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#doAppend-org.apache.hadoop.hbase.wal.WALProvider.Writer-org.apache.hadoop.hbase.regionserver.wal.FSWALEntry-">doAppend</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> writer, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSWALEntry.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSWALEntry</a> entry)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>protected boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#doCheckLogLowReplication--">doCheckLogLowReplication</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#doReplaceWriter-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-org.apache.hadoop.hbase.wal.WALProvider.Writer-">doReplaceWriter</a></span>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> nextWriter)</code> |
| <div class="block">Notice that you need to clear the <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollRequested"><code>AbstractFSWAL.rollRequested</code></a> flag in this method, as the new writer |
| will begin to work before returning from this method.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#doShutdown--">doShutdown</a></span>()</code> </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>(package private) int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#getLogReplication--">getLogReplication</a></span>()</code> |
| <div class="block">This method gets the datanode replication count for the current WAL.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>(package private) <a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#getOutputStream--">getOutputStream</a></span>()</code> |
| <div class="block">Currently, we need to expose the writer's OutputStream to tests so that they can manipulate the |
| default behavior (such as setting the maxRecoveryErrorCount value).</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>(package private) org.apache.hadoop.hdfs.protocol.DatanodeInfo[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#getPipeline--">getPipeline</a></span>()</code> |
| <div class="block">This method gets the pipeline for the current WAL.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>protected long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#getSequenceOnRingBuffer--">getSequenceOnRingBuffer</a></span>()</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>(package private) <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#getWriter--">getWriter</a></span>()</code> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>(package private) boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#isLowReplicationRollEnabled--">isLowReplicationRollEnabled</a></span>()</code> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#preemptiveSync-org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter-">preemptiveSync</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">ProtobufLogWriter</a> nextWriter)</code> |
| <div class="block">Run a sync after opening to set up the pipeline.</div> |
| </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#publishSyncOnRingBuffer-boolean-">publishSyncOnRingBuffer</a></span>(boolean forceSync)</code> </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#publishSyncOnRingBuffer-long-boolean-">publishSyncOnRingBuffer</a></span>(long sequence, |
| boolean forceSync)</code> </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#publishSyncThenBlockOnCompletion-org.apache.htrace.core.TraceScope-boolean-">publishSyncThenBlockOnCompletion</a></span>(org.apache.htrace.core.TraceScope scope, |
| boolean forceSync)</code> </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>(package private) void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#setWriter-org.apache.hadoop.hbase.wal.WALProvider.Writer-">setWriter</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> writer)</code> </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#sync--">sync</a></span>()</code> |
| <div class="block">Sync what we have in the WAL.</div> |
| </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#sync-boolean-">sync</a></span>(boolean forceSync)</code> </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#sync-long-">sync</a></span>(long txid)</code> |
| <div class="block">Sync the WAL if the txId was not already sync'd.</div> |
| </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#sync-long-boolean-">sync</a></span>(long txid, |
| boolean forceSync)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.hadoop.hbase.regionserver.wal.<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a></h3> |
| <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#abortCacheFlush-byte:A-">abortCacheFlush</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#appendData-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKeyImpl-org.apache.hadoop.hbase.wal.WALEdit-">appendData</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#appendEntry-W-org.apache.hadoop.hbase.regionserver.wal.FSWALEntry-">appendEntry</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#appendMarker-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKeyImpl-org.apache.hadoop.hbase.wal.WALEdit-">appendMarker</a>, <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#atHeadOfRingBufferEventHandlerAppend--">atHeadOfRingBufferEventHandlerAppend</a>, <a 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| <h4>disruptor</h4> |
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| <div class="block">The nexus at which all incoming handlers meet. Does appends and sync with an ordering. Appends |
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| (can we make it once only? ... maybe not since time to append is so different from time to sync |
| and sometimes we don't want to sync or we want to async the sync). The ring is where we make |
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| <div class="block">This fellow is run by the above appendExecutor service but it is all about batching up appends |
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| <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> logDir, |
| org.apache.hadoop.conf.Configuration conf) |
| 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">Constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>fs</code> - filesystem handle</dd> |
| <dd><code>root</code> - path for stored and archived wals</dd> |
| <dd><code>logDir</code> - dir where wals are stored</dd> |
| <dd><code>conf</code> - configuration to use</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="FSHLog-org.apache.hadoop.fs.FileSystem-org.apache.hadoop.fs.Path-java.lang.String-java.lang.String-org.apache.hadoop.conf.Configuration-java.util.List-boolean-java.lang.String-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>FSHLog</h4> |
| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.229">FSHLog</a>(org.apache.hadoop.fs.FileSystem fs, |
| org.apache.hadoop.fs.Path rootDir, |
| <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> logDir, |
| <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> archiveDir, |
| org.apache.hadoop.conf.Configuration conf, |
| <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/regionserver/wal/WALActionsListener.html" title="interface in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener</a>> listeners, |
| boolean failIfWALExists, |
| <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> prefix, |
| <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> suffix) |
| 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">Create an edit log at the given <code>dir</code> location. You should never have to load an |
| existing log. If there is a log at startup, it should have already been processed and deleted |
| by the time the WAL object is started up.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>fs</code> - filesystem handle</dd> |
| <dd><code>rootDir</code> - path to where logs and oldlogs</dd> |
| <dd><code>logDir</code> - dir where wals are stored</dd> |
| <dd><code>archiveDir</code> - dir where wals are archived</dd> |
| <dd><code>conf</code> - configuration to use</dd> |
| <dd><code>listeners</code> - Listeners on WAL events. Listeners passed here will be registered before we do |
| anything else; e.g. the Constructor <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollWriter--"><code>AbstractFSWAL.rollWriter()</code></a>.</dd> |
| <dd><code>failIfWALExists</code> - If true IOException will be thrown if files related to this wal already |
| exist.</dd> |
| <dd><code>prefix</code> - should always be hostname and port in distributed env and it will be URL encoded |
| before being used. If prefix is null, "wal" will be used</dd> |
| <dd><code>suffix</code> - will be url encoded. null is treated as empty. non-empty must start with |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/AbstractFSWALProvider.html#WAL_FILE_NAME_DELIMITER"><code>AbstractFSWALProvider.WAL_FILE_NAME_DELIMITER</code></a></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> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getOutputStream--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getOutputStream</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.269">getOutputStream</a>()</pre> |
| <div class="block">Currently, we need to expose the writer's OutputStream to tests so that they can manipulate the |
| default behavior (such as setting the maxRecoveryErrorCount value). This is |
| done using reflection on the underlying HDFS OutputStream. NOTE: This could be removed once Hadoop1 support is |
| removed.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>null if underlying stream is not ready.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="preemptiveSync-org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>preemptiveSync</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.277">preemptiveSync</a>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">ProtobufLogWriter</a> nextWriter)</pre> |
| <div class="block">Run a sync after opening to set up the pipeline.</div> |
| </li> |
| </ul> |
| <a name="createWriterInstance-org.apache.hadoop.fs.Path-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>createWriterInstance</h4> |
| <pre>protected <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.294">createWriterInstance</a>(org.apache.hadoop.fs.Path path) |
| 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 allows subclasses to inject different writers without having to extend other |
| methods like rollWriter().</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#createWriterInstance-org.apache.hadoop.fs.Path-">createWriterInstance</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Writer instance</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="afterCreatingZigZagLatch--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>afterCreatingZigZagLatch</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.307">afterCreatingZigZagLatch</a>()</pre> |
| <div class="block">Used to manufacture race condition reliably. For testing only.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#beforeWaitOnSafePoint--"><code>beforeWaitOnSafePoint()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="beforeWaitOnSafePoint--"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>beforeWaitOnSafePoint</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.314">beforeWaitOnSafePoint</a>()</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#afterCreatingZigZagLatch--"><code>afterCreatingZigZagLatch()</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="doAppend-org.apache.hadoop.hbase.wal.WALProvider.Writer-org.apache.hadoop.hbase.regionserver.wal.FSWALEntry-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>doAppend</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.318">doAppend</a>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> writer, |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSWALEntry.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSWALEntry</a> entry) |
| 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="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#doAppend-W-org.apache.hadoop.hbase.regionserver.wal.FSWALEntry-">doAppend</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</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="doReplaceWriter-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-org.apache.hadoop.hbase.wal.WALProvider.Writer-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>doReplaceWriter</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.323">doReplaceWriter</a>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> nextWriter) |
| 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"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#doReplaceWriter-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-W-">AbstractFSWAL</a></code></span></div> |
| <div class="block">Notice that you need to clear the <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollRequested"><code>AbstractFSWAL.rollRequested</code></a> flag in this method, as the new writer |
| will begin to work before returning from this method. If we clear the flag after returning from |
| this call, we may miss a roll request. The implementation class should choose a proper place to |
| clear the <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#rollRequested"><code>AbstractFSWAL.rollRequested</code></a> flag so we do not miss a roll request, typically before you |
| start writing to the new writer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#doReplaceWriter-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-W-">doReplaceWriter</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</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="closeWriter-org.apache.hadoop.hbase.wal.WALProvider.Writer-org.apache.hadoop.fs.Path-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>closeWriter</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.426">closeWriter</a>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> writer, |
| org.apache.hadoop.fs.Path path, |
| boolean syncCloseCall) |
| 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> |
| </dl> |
| </li> |
| </ul> |
| <a name="doShutdown--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>doShutdown</h4> |
| <pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.445">doShutdown</a>() |
| 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="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#doShutdown--">doShutdown</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</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="append-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKeyImpl-org.apache.hadoop.hbase.wal.WALEdit-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>append</h4> |
| <pre>protected long <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.483">append</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hri, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALKeyImpl.html" title="class in org.apache.hadoop.hbase.wal">WALKeyImpl</a> key, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> edits, |
| boolean inMemstore) |
| 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"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#append-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKeyImpl-org.apache.hadoop.hbase.wal.WALEdit-boolean-">AbstractFSWAL</a></code></span></div> |
| <div class="block">Append a set of edits to the WAL. |
| <p/> |
| The WAL is not flushed/sync'd after this transaction completes BUT on return this edit must |
| have its region edit/sequence id assigned else it messes up our unification of mvcc and |
| sequenceid. On return <code>key</code> will have the region edit/sequence id filled in. |
| <p/> |
| NOTE: This append, at a time that is usually after this call returns, starts an mvcc |
| transaction by calling 'begin' wherein which we assign this update a sequenceid. At assignment |
| time, we stamp all the passed in Cells inside WALEdit with their sequenceId. You must |
| 'complete' the transaction this mvcc transaction by calling |
| MultiVersionConcurrencyControl#complete(...) or a variant otherwise mvcc will get stuck. Do it |
| in the finally of a try/finally block within which this append lives and any subsequent |
| operations like sync or update of memstore, etc. Get the WriteEntry to pass mvcc out of the |
| passed in WALKey <code>walKey</code> parameter. Be warned that the WriteEntry is not |
| immediately available on return from this method. It WILL be available subsequent to a sync of |
| this append; otherwise, you will just have to wait on the WriteEntry to get filled in.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#append-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKeyImpl-org.apache.hadoop.hbase.wal.WALEdit-boolean-">append</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>hri</code> - the regioninfo associated with append</dd> |
| <dd><code>key</code> - Modified by this call; we add to it this edits region edit/sequence id.</dd> |
| <dd><code>edits</code> - Edits to append. MAY CONTAIN NO EDITS for case where we want to get an edit |
| sequence id that is after all currently appended edits.</dd> |
| <dd><code>inMemstore</code> - Always true except for case where we are writing a region event meta |
| marker edit, for example, a compaction completion record into the WAL or noting a |
| Region Open event. In these cases the entry is just so we can finish an unfinished |
| compaction after a crash when the new Server reads the WAL on recovery, etc. These |
| transition event 'Markers' do not go via the memstore. When memstore is false, |
| we presume a Marker event edit.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Returns a 'transaction id' and <code>key</code> will have the region edit/sequence id |
| in it.</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="checkLogRoll--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>checkLogRoll</h4> |
| <pre>private boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.680">checkLogRoll</a>()</pre> |
| <div class="block">Schedule a log roll if needed.</div> |
| </li> |
| </ul> |
| <a name="doCheckLogLowReplication--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>doCheckLogLowReplication</h4> |
| <pre>protected boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.717">doCheckLogLowReplication</a>()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#doCheckLogLowReplication--">doCheckLogLowReplication</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if number of replicas for the WAL is lower than threshold</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getSequenceOnRingBuffer--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>getSequenceOnRingBuffer</h4> |
| <pre>protected long <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.763">getSequenceOnRingBuffer</a>()</pre> |
| </li> |
| </ul> |
| <a name="publishSyncOnRingBuffer-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>publishSyncOnRingBuffer</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.767">publishSyncOnRingBuffer</a>(boolean forceSync)</pre> |
| </li> |
| </ul> |
| <a name="publishSyncOnRingBuffer-long-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>publishSyncOnRingBuffer</h4> |
| <pre>protected <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.773">publishSyncOnRingBuffer</a>(long sequence, |
| boolean forceSync)</pre> |
| </li> |
| </ul> |
| <a name="publishSyncThenBlockOnCompletion-org.apache.htrace.core.TraceScope-boolean-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>publishSyncThenBlockOnCompletion</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.786">publishSyncThenBlockOnCompletion</a>(org.apache.htrace.core.TraceScope scope, |
| boolean forceSync) |
| 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> |
| </dl> |
| </li> |
| </ul> |
| <a name="getLogReplication--"> |
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| <h4>getLogReplication</h4> |
| <pre>int <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.800">getLogReplication</a>()</pre> |
| <div class="block">This method gets the datanode replication count for the current WAL. |
| <p> |
| If the pipeline isn't started yet or is empty, you will get the default replication factor. |
| Therefore, if this function returns 0, it means you are not properly running with the HDFS-826 |
| patch.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#getLogReplication--">getLogReplication</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="sync--"> |
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| <h4>sync</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.813">sync</a>() |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.html#sync--">WAL</a></code></span></div> |
| <div class="block">Sync what we have in the WAL.</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> |
| </li> |
| </ul> |
| <a name="sync-boolean-"> |
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| </a> |
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| <h4>sync</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.818">sync</a>(boolean forceSync) |
| 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>forceSync</code> - Flag to force sync rather than flushing to the buffer. Example - Hadoop hflush |
| vs hsync.</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> |
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| </ul> |
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| <h4>sync</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.825">sync</a>(long txid) |
| 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"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.html#sync-long-">WAL</a></code></span></div> |
| <div class="block">Sync the WAL if the txId was not already sync'd.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>txid</code> - Transaction id to sync to.</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="sync-long-boolean-"> |
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| <h4>sync</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.830">sync</a>(long txid, |
| boolean forceSync) |
| 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>txid</code> - Transaction id to sync to.</dd> |
| <dd><code>forceSync</code> - Flag to force sync rather than flushing to the buffer. Example - Hadoop hflush |
| vs hsync.</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> |
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| </a> |
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| <li class="blockList"> |
| <h4>isLowReplicationRollEnabled</h4> |
| <pre>boolean <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.841">isLowReplicationRollEnabled</a>()</pre> |
| </li> |
| </ul> |
| <a name="getPipeline--"> |
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| <h4>getPipeline</h4> |
| <pre>org.apache.hadoop.hdfs.protocol.DatanodeInfo[] <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.1187">getPipeline</a>()</pre> |
| <div class="block">This method gets the pipeline for the current WAL.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html#getPipeline--">getPipeline</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a>></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getWriter--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getWriter</h4> |
| <pre><a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.1197">getWriter</a>()</pre> |
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| </ul> |
| <a name="setWriter-org.apache.hadoop.hbase.wal.WALProvider.Writer-"> |
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| <h4>setWriter</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/FSHLog.html#line.1202">setWriter</a>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.Writer.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.Writer</a> writer)</pre> |
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