org.elasticsearch.index.translog

Class BufferingTranslogWriter

java.lang.Object

org.elasticsearch.index.translog.TranslogReader

org.elasticsearch.index.translog.TranslogWriter

org.elasticsearch.index.translog.BufferingTranslogWriter

All Implemented Interfaces:

Closeable, AutoCloseable, Comparable<TranslogReader>

public final class BufferingTranslogWriter
extends TranslogWriter

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.index.translog.TranslogWriter

TranslogWriter.Type

Field Summary

Fields inherited from class org.elasticsearch.index.translog.TranslogWriter

lastSyncedOffset, operationCounter, readLock, shardId, TRANSLOG_CODEC, VERSION, VERSION_CHECKPOINTS, VERSION_CHECKSUMS, writeLock, writtenOffset

Fields inherited from class org.elasticsearch.index.translog.TranslogReader

channel, channelReference, closed, firstOperationOffset, generation, UNKNOWN_OP_COUNT

Constructor Summary

Constructors

Constructor and Description
BufferingTranslogWriter(ShardId shardId, long generation, org.elasticsearch.index.translog.ChannelReference channelReference, int bufferSize)

Method Summary

Methods

Modifier and Type	Method and Description
Translog.Location	add(BytesReference data) add the given bytes to the translog and return the location they were written at
protected void	flush() Flushes the buffer if the translog is buffered.
protected void	readBytes(ByteBuffer targetBuffer, long position) reads bytes at position into the given buffer, filling it.
long	sizeInBytes()
void	sync() write all buffered ops to disk and fsync file
boolean	syncNeeded() returns true if there are buffered ops
void	updateBufferSize(int bufferSize) change the size of the internal buffer if relevant

Methods inherited from class org.elasticsearch.index.translog.TranslogWriter

checkpoint, closeWithTragicEvent, create, ensureOpen, getTragicException, immutableReader, newReaderFromWriter, syncUpTo, totalOperations

Methods inherited from class org.elasticsearch.index.translog.TranslogReader

close, compareTo, getFirstOperationOffset, getGeneration, isClosed, newReaderSnapshot, newSnapshot, open, path, read, read, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferingTranslogWriter

public BufferingTranslogWriter(ShardId shardId,
                       long generation,
                       org.elasticsearch.index.translog.ChannelReference channelReference,
                       int bufferSize)
                        throws IOException

Throws:

IOException

Method Detail

add

public Translog.Location add(BytesReference data)
                      throws IOException

Description copied from class: TranslogWriter

add the given bytes to the translog and return the location they were written at

Overrides:

add in class TranslogWriter

Throws:

IOException

flush

protected final void flush()
                    throws IOException

Description copied from class: TranslogWriter

Flushes the buffer if the translog is buffered.

Overrides:

flush in class TranslogWriter

Throws:

IOException

readBytes

protected void readBytes(ByteBuffer targetBuffer,
             long position)
                  throws IOException

Description copied from class: TranslogReader

reads bytes at position into the given buffer, filling it.

Overrides:

readBytes in class TranslogWriter

Throws:

IOException

syncNeeded

public boolean syncNeeded()

Description copied from class: TranslogWriter

returns true if there are buffered ops

Overrides:

syncNeeded in class TranslogWriter

sync

public void sync()
          throws IOException

Description copied from class: TranslogWriter

write all buffered ops to disk and fsync file

Overrides:

sync in class TranslogWriter

Throws:

IOException

updateBufferSize

public void updateBufferSize(int bufferSize)

Description copied from class: TranslogWriter

change the size of the internal buffer if relevant

Overrides:

updateBufferSize in class TranslogWriter

sizeInBytes

public long sizeInBytes()

Overrides:

sizeInBytes in class TranslogWriter