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| <div class="subTitle">org.apache.hadoop.hbase.regionserver.wal</div> |
| <h2 title="Interface WALActionsListener" class="title">Interface WALActionsListener</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/MetricsWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">MetricsWAL</a>, <a href="../../../../../../org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceWALActionListener.html" title="class in org.apache.hadoop.hbase.replication.regionserver">ReplicationSourceWALActionListener</a></dd> |
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| <pre>@InterfaceAudience.Private |
| public interface <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.33">WALActionsListener</a></pre> |
| <div class="block">Get notification of WAL events. The invocations are inline |
| so make sure your implementation is fast else you'll slow hbase.</div> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Interface and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.RollRequestReason.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener.RollRequestReason</a></span></code> |
| <div class="block">The reason for the log roll request.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| </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="t5" class="tableTab"><span><a href="javascript:show(16);">Default 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>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#logCloseRequested--">logCloseRequested</a></span>()</code> |
| <div class="block">The WAL is about to close.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#logRollRequested-org.apache.hadoop.hbase.regionserver.wal.WALActionsListener.RollRequestReason-">logRollRequested</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.RollRequestReason.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener.RollRequestReason</a> reason)</code> |
| <div class="block">A request was made that the WAL be rolled.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#postAppend-long-long-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-">postAppend</a></span>(long entryLen, |
| long elapsedTimeMillis, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALKey.html" title="interface in org.apache.hadoop.hbase.wal">WALKey</a> logKey, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> logEdit)</code> |
| <div class="block">For notification post append to the writer.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#postLogArchive-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">postLogArchive</a></span>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath)</code> |
| <div class="block">The WAL has been archived.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#postLogRoll-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">postLogRoll</a></span>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath)</code> |
| <div class="block">The WAL has been rolled.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#postSync-long-int-">postSync</a></span>(long timeInNanos, |
| int handlerSyncs)</code> |
| <div class="block">For notification post writer sync.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#preLogArchive-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">preLogArchive</a></span>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath)</code> |
| <div class="block">The WAL is going to be archived.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#preLogRoll-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">preLogRoll</a></span>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath)</code> |
| <div class="block">The WAL is going to be rolled.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#visitLogEntryBeforeWrite-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-">visitLogEntryBeforeWrite</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> info, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALKey.html" title="interface in org.apache.hadoop.hbase.wal">WALKey</a> logKey, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> logEdit)</code> |
| <div class="block">Called before each write.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#visitLogEntryBeforeWrite-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-">visitLogEntryBeforeWrite</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALKey.html" title="interface in org.apache.hadoop.hbase.wal">WALKey</a> logKey, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> logEdit)</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="preLogRoll-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>preLogRoll</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.53">preLogRoll</a>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath) |
| 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">The WAL is going to be rolled. The oldPath can be null if this is |
| the first log file from the regionserver.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>oldPath</code> - the path to the old wal</dd> |
| <dd><code>newPath</code> - the path to the new wal</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="postLogRoll-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>postLogRoll</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.61">postLogRoll</a>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath) |
| 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">The WAL has been rolled. The oldPath can be null if this is |
| the first log file from the regionserver.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>oldPath</code> - the path to the old wal</dd> |
| <dd><code>newPath</code> - the path to the new wal</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="preLogArchive-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>preLogArchive</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.68">preLogArchive</a>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath) |
| 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">The WAL is going to be archived.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>oldPath</code> - the path to the old wal</dd> |
| <dd><code>newPath</code> - the path to the new wal</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="postLogArchive-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>postLogArchive</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.75">postLogArchive</a>(org.apache.hadoop.fs.Path oldPath, |
| org.apache.hadoop.fs.Path newPath) |
| 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">The WAL has been archived.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>oldPath</code> - the path to the old wal</dd> |
| <dd><code>newPath</code> - the path to the new wal</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="logRollRequested-org.apache.hadoop.hbase.regionserver.wal.WALActionsListener.RollRequestReason-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>logRollRequested</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.80">logRollRequested</a>(<a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.RollRequestReason.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener.RollRequestReason</a> reason)</pre> |
| <div class="block">A request was made that the WAL be rolled.</div> |
| </li> |
| </ul> |
| <a name="logCloseRequested--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>logCloseRequested</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.85">logCloseRequested</a>()</pre> |
| <div class="block">The WAL is about to close.</div> |
| </li> |
| </ul> |
| <a name="visitLogEntryBeforeWrite-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>visitLogEntryBeforeWrite</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.90">visitLogEntryBeforeWrite</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> info, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALKey.html" title="interface in org.apache.hadoop.hbase.wal">WALKey</a> logKey, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> logEdit)</pre> |
| <div class="block">Called before each write.</div> |
| </li> |
| </ul> |
| <a name="visitLogEntryBeforeWrite-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>visitLogEntryBeforeWrite</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.100">visitLogEntryBeforeWrite</a>(<a href="../../../../../../org/apache/hadoop/hbase/wal/WALKey.html" title="interface in org.apache.hadoop.hbase.wal">WALKey</a> logKey, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> logEdit) |
| 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>logKey</code> - </dd> |
| <dd><code>logEdit</code> - TODO: Retire this in favor of |
| <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#visitLogEntryBeforeWrite-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-"><code>visitLogEntryBeforeWrite(RegionInfo, WALKey, WALEdit)</code></a> It only exists to get |
| scope when replicating. Scope should be in the WALKey and not need us passing in a |
| <code>htd</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> - If failed to parse the WALEdit</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="postAppend-long-long-org.apache.hadoop.hbase.wal.WALKey-org.apache.hadoop.hbase.wal.WALEdit-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>postAppend</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.111">postAppend</a>(long entryLen, |
| long elapsedTimeMillis, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALKey.html" title="interface in org.apache.hadoop.hbase.wal">WALKey</a> logKey, |
| <a href="../../../../../../org/apache/hadoop/hbase/wal/WALEdit.html" title="class in org.apache.hadoop.hbase.wal">WALEdit</a> logEdit) |
| 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">For notification post append to the writer. Used by metrics system at least. |
| TODO: Combine this with above.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>entryLen</code> - approx length of cells in this append.</dd> |
| <dd><code>elapsedTimeMillis</code> - elapsed time in milliseconds.</dd> |
| <dd><code>logKey</code> - A WAL key</dd> |
| <dd><code>logEdit</code> - A WAL edit containing list of cells.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
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| <h4>postSync</h4> |
| <pre>default void <a href="../../../../../../src-html/org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html#line.120">postSync</a>(long timeInNanos, |
| int handlerSyncs)</pre> |
| <div class="block">For notification post writer sync. Used by metrics system at least.</div> |
| <dl> |
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| <dd><code>timeInNanos</code> - How long the filesystem sync took in nanoseconds.</dd> |
| <dd><code>handlerSyncs</code> - How many sync handler calls were released by this call to filesystem |
| sync.</dd> |
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