org.apache.hadoop.hbase.wal

Class LogRecoveredEditsOutputSink

java.lang.Object

org.apache.hadoop.hbase.wal.OutputSink

org.apache.hadoop.hbase.wal.LogRecoveredEditsOutputSink

Direct Known Subclasses:

BoundedLogWriterCreationOutputSink

@InterfaceAudience.Private
public class LogRecoveredEditsOutputSink
extends OutputSink

Class that manages the output streams from the log splitting process.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hbase.wal.OutputSink

OutputSink.WriterThread

Field Summary

Fields inherited from class org.apache.hadoop.hbase.wal.OutputSink

blacklistedRegions, closeAndCleanCompleted, controller, entryBuffers, numThreads, regionMaximumEditLogSeqNum, reporter, skippedEdits, splits, writers, writersClosed, writerThreads

Constructor Summary

Constructors

Constructor and Description
LogRecoveredEditsOutputSink(WALSplitter walSplitter, WALSplitter.PipelineController controller, EntryBuffers entryBuffers, int numWriters)

Method Summary

Modifier and Type	Method and Description
void	append(WALSplitter.RegionEntryBuffer buffer)
List<org.apache.hadoop.fs.Path>	finishWritingAndClose()
int	getNumberOfRecoveredRegions()
Map<byte[],Long>	getOutputCounts()
boolean	keepRegionEvent(WAL.Entry entry) Some WALEdit's contain only KV's for account on what happened to a region.

Methods inherited from class org.apache.hadoop.hbase.wal.OutputSink

finishWriting, flush, restartWriterThreadsIfNeeded, startWriterThreads

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LogRecoveredEditsOutputSink

public LogRecoveredEditsOutputSink(WALSplitter walSplitter,
                                   WALSplitter.PipelineController controller,
                                   EntryBuffers entryBuffers,
                                   int numWriters)

Method Detail

finishWritingAndClose

public List<org.apache.hadoop.fs.Path> finishWritingAndClose()
                                                      throws IOException

Specified by:

finishWritingAndClose in class OutputSink

Returns:

null if failed to report progress

Throws:

IOException

append

public void append(WALSplitter.RegionEntryBuffer buffer)
            throws IOException

Specified by:

append in class OutputSink

Parameters:

buffer - A WAL Edit Entry

Throws:

IOException

keepRegionEvent

public boolean keepRegionEvent(WAL.Entry entry)

Description copied from class: OutputSink

Some WALEdit's contain only KV's for account on what happened to a region. Not all sinks will want to get all of those edits.

Specified by:

keepRegionEvent in class OutputSink

Returns:

Return true if this sink wants to accept this region-level WALEdit.

getOutputCounts

public Map<byte[],Long> getOutputCounts()

Specified by:

getOutputCounts in class OutputSink

Returns:

a map from encoded region ID to the number of edits written out for that region.

getNumberOfRecoveredRegions

public int getNumberOfRecoveredRegions()

Specified by:

getNumberOfRecoveredRegions in class OutputSink

Returns:

number of regions we've recovered