org.apache.hadoop.hbase.regionserver.wal

Class ProtobufLogWriter

java.lang.Object

org.apache.hadoop.hbase.regionserver.wal.WriterBase

org.apache.hadoop.hbase.regionserver.wal.ProtobufLogWriter

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, DefaultWALProvider.Writer, WALProvider.Writer

Direct Known Subclasses:

SecureProtobufLogWriter

@InterfaceAudience.LimitedPrivate(value="Configuration")
public class ProtobufLogWriter
extends WriterBase

Writer for protobuf-based WAL.

Field Summary

Fields

Modifier and Type	Field and Description
protected Codec.Encoder	cellEncoder
protected WALCellCodec.ByteStringCompressor	compressor
protected FSDataOutputStream	output

Fields inherited from class org.apache.hadoop.hbase.regionserver.wal.WriterBase

compressionContext, conf

Constructor Summary

Constructors

Constructor and Description
ProtobufLogWriter()

Method Summary

Modifier and Type	Method and Description
void	append(WAL.Entry entry)
protected WALProtos.WALHeader	buildWALHeader(Configuration conf, WALProtos.WALHeader.Builder builder)
void	close()
protected WALCellCodec	getCodec(Configuration conf, CompressionContext compressionContext)
long	getLength()
FSDataOutputStream	getStream()
void	init(FileSystem fs, Path path, Configuration conf, boolean overwritable)
protected void	initAfterHeader(boolean doCompress)
void	sync()

Methods inherited from class org.apache.hadoop.hbase.regionserver.wal.WriterBase

initializeCompressionContext

Methods inherited from class java.lang.Object

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

Field Detail

output

protected FSDataOutputStream output

cellEncoder

protected Codec.Encoder cellEncoder

compressor

protected WALCellCodec.ByteStringCompressor compressor

Constructor Detail

ProtobufLogWriter

public ProtobufLogWriter()

Method Detail

getCodec

protected WALCellCodec getCodec(Configuration conf,
                                CompressionContext compressionContext)
                         throws java.io.IOException

Throws:

java.io.IOException

buildWALHeader

protected WALProtos.WALHeader buildWALHeader(Configuration conf,
                                             WALProtos.WALHeader.Builder builder)
                                      throws java.io.IOException

Throws:

java.io.IOException

init

public void init(FileSystem fs,
                 Path path,
                 Configuration conf,
                 boolean overwritable)
          throws java.io.IOException

Specified by:

init in interface DefaultWALProvider.Writer

Overrides:

init in class WriterBase

Throws:

java.io.IOException

initAfterHeader

protected void initAfterHeader(boolean doCompress)
                        throws java.io.IOException

Throws:

java.io.IOException

append

public void append(WAL.Entry entry)
            throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

sync

public void sync()
          throws java.io.IOException

Throws:

java.io.IOException

getLength

public long getLength()
               throws java.io.IOException

Throws:

java.io.IOException

getStream

public FSDataOutputStream getStream()