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| <div class="header"> |
| <h1 title="Package" class="title">Package org.apache.hadoop.hbase.regionserver.wal</h1> |
| </div> |
| <div class="contentContainer"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Interface Summary table, listing interfaces, and an explanation"> |
| <caption><span>Interface Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Interface</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/MetricsWALSource.html" title="interface in org.apache.hadoop.hbase.regionserver.wal">MetricsWALSource</a></td> |
| <td class="colLast"> |
| <div class="block">Interface of the source that will export metrics about the region server's WAL.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.html" title="interface in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener</a></td> |
| <td class="colLast"> |
| <div class="block">Get notification of WAL events.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.ByteStringCompressor.html" title="interface in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.ByteStringCompressor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.ByteStringUncompressor.html" title="interface in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.ByteStringUncompressor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation"> |
| <caption><span>Class Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL</a><W extends <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.WriterBase.html" title="interface in org.apache.hadoop.hbase.wal">WALProvider.WriterBase</a>></td> |
| <td class="colLast"> |
| <div class="block">Implementation of <a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.html" title="interface in org.apache.hadoop.hbase.wal"><code>WAL</code></a> to go against <code>FileSystem</code>; i.e.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.WalProps.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractFSWAL.WalProps</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AbstractProtobufLogWriter</a></td> |
| <td class="colLast"> |
| <div class="block">Base class for Protobuf log writer.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AsyncFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AsyncFSWAL</a></td> |
| <td class="colLast"> |
| <div class="block">An asynchronous implementation of FSWAL.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AsyncProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AsyncProtobufLogWriter</a></td> |
| <td class="colLast"> |
| <div class="block">AsyncWriter for protobuf-based WAL.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AsyncProtobufLogWriter.OutputStreamWrapper.html" title="class in org.apache.hadoop.hbase.regionserver.wal">AsyncProtobufLogWriter.OutputStreamWrapper</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/CombinedAsyncWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">CombinedAsyncWriter</a></td> |
| <td class="colLast"> |
| <div class="block">An <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.AsyncWriter.html" title="interface in org.apache.hadoop.hbase.wal"><code>WALProvider.AsyncWriter</code></a> wrapper which writes data to a set of <a href="../../../../../../org/apache/hadoop/hbase/wal/WALProvider.AsyncWriter.html" title="interface in org.apache.hadoop.hbase.wal"><code>WALProvider.AsyncWriter</code></a> instances.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/CompressionContext.html" title="class in org.apache.hadoop.hbase.regionserver.wal">CompressionContext</a></td> |
| <td class="colLast"> |
| <div class="block">Context that holds the various dictionaries for compression in WAL.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/CompressionContext.ValueCompressor.html" title="class in org.apache.hadoop.hbase.regionserver.wal">CompressionContext.ValueCompressor</a></td> |
| <td class="colLast"> |
| <div class="block">Encapsulates the compression algorithm and its streams that we will use for value |
| compression in this WAL.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/Compressor.html" title="class in org.apache.hadoop.hbase.regionserver.wal">Compressor</a></td> |
| <td class="colLast"> |
| <div class="block">A set of static functions for running our custom WAL compression/decompression.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/DualAsyncFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">DualAsyncFSWAL</a></td> |
| <td class="colLast"> |
| <div class="block">An AsyncFSWAL which writes data to two filesystems.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog</a></td> |
| <td class="colLast"> |
| <div class="block">The original implementation of FSWAL.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.RingBufferExceptionHandler.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.RingBufferExceptionHandler</a></td> |
| <td class="colLast"> |
| <div class="block">Exception handler to pass the disruptor ringbuffer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSHLog.SafePointZigZagLatch.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSHLog.SafePointZigZagLatch</a></td> |
| <td class="colLast"> |
| <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="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FSWALEntry.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FSWALEntry</a></td> |
| <td class="colLast"> |
| <div class="block">A WAL Entry for <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/AbstractFSWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal"><code>AbstractFSWAL</code></a> implementation.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/MetricsWAL.html" title="class in org.apache.hadoop.hbase.regionserver.wal">MetricsWAL</a></td> |
| <td class="colLast"> |
| <div class="block">Class used to push numbers about the WAL into the metrics subsystem.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/MetricsWALSourceImpl.html" title="class in org.apache.hadoop.hbase.regionserver.wal">MetricsWALSourceImpl</a></td> |
| <td class="colLast"> |
| <div class="block">Class that transitions metrics from MetricsWAL into the metrics subsystem.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ProtobufLogReader.html" title="class in org.apache.hadoop.hbase.regionserver.wal">ProtobufLogReader</a></td> |
| <td class="colLast"> |
| <div class="block">A Protobuf based WAL has the following structure:</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ProtobufLogReader.WALHdrContext.html" title="class in org.apache.hadoop.hbase.regionserver.wal">ProtobufLogReader.WALHdrContext</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">ProtobufLogWriter</a></td> |
| <td class="colLast"> |
| <div class="block">Writer for protobuf-based WAL.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ReaderBase.html" title="class in org.apache.hadoop.hbase.regionserver.wal">ReaderBase</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/RingBufferTruck.html" title="class in org.apache.hadoop.hbase.regionserver.wal">RingBufferTruck</a></td> |
| <td class="colLast"> |
| <div class="block">A 'truck' to carry a payload across the ring buffer from Handler to WAL.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SecureAsyncProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SecureAsyncProtobufLogWriter</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SecureProtobufLogReader.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SecureProtobufLogReader</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SecureProtobufLogWriter.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SecureProtobufLogWriter</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SecureWALCellCodec.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SecureWALCellCodec</a></td> |
| <td class="colLast"> |
| <div class="block">A WALCellCodec that encrypts the WALedits.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SecureWALCellCodec.EncryptedKvDecoder.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SecureWALCellCodec.EncryptedKvDecoder</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SecureWALCellCodec.EncryptedKvEncoder.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SecureWALCellCodec.EncryptedKvEncoder</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SequenceIdAccounting.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SequenceIdAccounting</a></td> |
| <td class="colLast"> |
| <div class="block">Accounting of sequence ids per region and then by column family.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFuture</a></td> |
| <td class="colLast"> |
| <div class="block">A Future on a filesystem sync call.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFutureCache.html" title="class in org.apache.hadoop.hbase.regionserver.wal">SyncFutureCache</a></td> |
| <td class="colLast"> |
| <div class="block">A cache of <a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/SyncFuture.html" title="class in org.apache.hadoop.hbase.regionserver.wal"><code>SyncFuture</code></a>s.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec</a></td> |
| <td class="colLast"> |
| <div class="block">Compression in this class is lifted off Compressor/KeyValueCompression.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.BaosAndCompressor.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.BaosAndCompressor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvDecoder.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.CompressedKvDecoder</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.CompressedKvEncoder.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.CompressedKvEncoder</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.EnsureKvEncoder.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.EnsureKvEncoder</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.NoneCompressor.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.NoneCompressor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.NoneUncompressor.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.NoneUncompressor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCellCodec.StatelessUncompressor.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCellCodec.StatelessUncompressor</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCoprocessorHost.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCoprocessorHost</a></td> |
| <td class="colLast"> |
| <div class="block">Implements the coprocessor environment and runtime support for coprocessors |
| loaded within a <a href="../../../../../../org/apache/hadoop/hbase/wal/WAL.html" title="interface in org.apache.hadoop.hbase.wal"><code>WAL</code></a>.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALCoprocessorHost.WALEnvironment.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALCoprocessorHost.WALEnvironment</a></td> |
| <td class="colLast"> |
| <div class="block">Encapsulation of the environment of each coprocessor</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALUtil.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALUtil</a></td> |
| <td class="colLast"> |
| <div class="block">Helper methods to ease Region Server integration with the Write Ahead Log (WAL).</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Enum Summary table, listing enums, and an explanation"> |
| <caption><span>Enum Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Enum</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/CompressionContext.DictionaryIndex.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">CompressionContext.DictionaryIndex</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/ProtobufLogReader.WALHdrResult.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">ProtobufLogReader.WALHdrResult</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/RingBufferTruck.Type.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">RingBufferTruck.Type</a></td> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALActionsListener.RollRequestReason.html" title="enum in org.apache.hadoop.hbase.regionserver.wal">WALActionsListener.RollRequestReason</a></td> |
| <td class="colLast"> |
| <div class="block">The reason for the log roll request.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
| <li class="blockList"> |
| <table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Exception Summary table, listing exceptions, and an explanation"> |
| <caption><span>Exception Summary</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Exception</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/DamagedWALException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">DamagedWALException</a></td> |
| <td class="colLast"> |
| <div class="block">Thrown when a failed append or sync on a WAL.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FailedLogCloseException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FailedLogCloseException</a></td> |
| <td class="colLast"> |
| <div class="block">Thrown when we fail close of the write-ahead-log file.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/FailedSyncBeforeLogCloseException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">FailedSyncBeforeLogCloseException</a></td> |
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| <td class="colFirst"><a href="../../../../../../org/apache/hadoop/hbase/regionserver/wal/WALClosedException.html" title="class in org.apache.hadoop.hbase.regionserver.wal">WALClosedException</a></td> |
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