org.apache.flink.table.runtime.io

Class CompressedHeaderlessChannelWriterOutputView

java.lang.Object

org.apache.flink.runtime.memory.AbstractPagedOutputView

org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView

org.apache.flink.table.runtime.io.CompressedHeaderlessChannelWriterOutputView

All Implemented Interfaces:

DataOutput, org.apache.flink.core.memory.DataOutputView, org.apache.flink.core.memory.MemorySegmentWritable, org.apache.flink.runtime.io.network.buffer.BufferRecycler

public final class CompressedHeaderlessChannelWriterOutputView
extends org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView
implements org.apache.flink.runtime.io.network.buffer.BufferRecycler

A DataOutputView that is backed by a FileIOChannel, making it effectively a data output stream. The view will compress its data before writing it in blocks to the underlying channel.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.io.network.buffer.BufferRecycler

org.apache.flink.runtime.io.network.buffer.BufferRecycler.DummyBufferRecycler

Field Summary

Fields inherited from class org.apache.flink.runtime.memory.AbstractPagedOutputView

headerLength, segmentSize

Constructor Summary

Constructors

Constructor and Description
CompressedHeaderlessChannelWriterOutputView(org.apache.flink.runtime.io.disk.iomanager.BufferFileWriter writer, org.apache.flink.runtime.io.compression.BlockCompressionFactory compressionCodecFactory, int compressionBlockSize)

Method Summary

Modifier and Type	Method and Description
int	close()
int	getBlockCount()
org.apache.flink.runtime.io.disk.iomanager.FileIOChannel	getChannel()
long	getNumBytes()
long	getNumCompressedBytes()
protected org.apache.flink.core.memory.MemorySegment	nextSegment(org.apache.flink.core.memory.MemorySegment current, int positionInCurrent)
void	recycle(org.apache.flink.core.memory.MemorySegment memorySegment)

Methods inherited from class org.apache.flink.runtime.memory.AbstractPagedOutputView

advance, clear, getCurrentPositionInSegment, getCurrentSegment, getHeaderLength, getSegmentSize, seekOutput, skipBytesToWrite, write, write, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.lang.Object

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

Constructor Detail

CompressedHeaderlessChannelWriterOutputView

public CompressedHeaderlessChannelWriterOutputView(org.apache.flink.runtime.io.disk.iomanager.BufferFileWriter writer,
                                                   org.apache.flink.runtime.io.compression.BlockCompressionFactory compressionCodecFactory,
                                                   int compressionBlockSize)

Method Detail

getChannel

public org.apache.flink.runtime.io.disk.iomanager.FileIOChannel getChannel()

Specified by:

getChannel in class org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView

close

public int close()
          throws IOException

Specified by:

close in class org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView

Throws:

IOException

nextSegment

protected org.apache.flink.core.memory.MemorySegment nextSegment(org.apache.flink.core.memory.MemorySegment current,
                                                                 int positionInCurrent)
                                                          throws IOException

Specified by:

nextSegment in class org.apache.flink.runtime.memory.AbstractPagedOutputView

Throws:

IOException

getNumBytes

public long getNumBytes()

Specified by:

getNumBytes in class org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView

getNumCompressedBytes

public long getNumCompressedBytes()

Specified by:

getNumCompressedBytes in class org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView

getBlockCount

public int getBlockCount()

Specified by:

getBlockCount in class org.apache.flink.runtime.io.disk.iomanager.AbstractChannelWriterOutputView

recycle

public void recycle(org.apache.flink.core.memory.MemorySegment memorySegment)

Specified by:

recycle in interface org.apache.flink.runtime.io.network.buffer.BufferRecycler