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

类 AbstractChannelWriterOutputView

java.lang.Object

org.apache.flink.runtime.memory.AbstractPagedOutputView

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

所有已实现的接口:

DataOutput, org.apache.flink.core.memory.DataOutputView, org.apache.flink.core.memory.MemorySegmentWritable

public abstract class AbstractChannelWriterOutputView
extends AbstractPagedOutputView

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

字段概要

从类继承的字段 org.apache.flink.runtime.memory.AbstractPagedOutputView

headerLength, segmentSize

构造器概要

构造器

构造器和说明
AbstractChannelWriterOutputView(int segmentSize, int headerLength)

方法概要

限定符和类型	方法和说明
abstract int	close() Closes this OutputView, closing the underlying writer
abstract int	getBlockCount() Gets the number of blocks used by this view.
abstract FileIOChannel	getChannel() Get the underlying channel.
abstract long	getNumBytes() Get output bytes.
abstract long	getNumCompressedBytes() Get output compressed bytes, return num bytes if there is no compression.

从类继承的方法 org.apache.flink.runtime.memory.AbstractPagedOutputView

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

从类继承的方法 java.lang.Object

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

构造器详细资料

AbstractChannelWriterOutputView

public AbstractChannelWriterOutputView(int segmentSize,
                                       int headerLength)

方法详细资料

getChannel

public abstract FileIOChannel getChannel()

Get the underlying channel.

close

public abstract int close()
                   throws IOException

Closes this OutputView, closing the underlying writer

返回:

the number of bytes in last memory segment.

抛出:

IOException

getBlockCount

public abstract int getBlockCount()

Gets the number of blocks used by this view.

getNumBytes

public abstract long getNumBytes()
                          throws IOException

Get output bytes.

抛出:

IOException

getNumCompressedBytes

public abstract long getNumCompressedBytes()
                                    throws IOException

Get output compressed bytes, return num bytes if there is no compression.

抛出:

IOException