org.apache.flink.runtime.iterative.io

Class SerializedUpdateBuffer

java.lang.Object

org.apache.flink.runtime.memory.AbstractPagedOutputView

org.apache.flink.runtime.iterative.io.SerializedUpdateBuffer

All Implemented Interfaces:

DataOutput, DataOutputView, MemorySegmentWritable

public class SerializedUpdateBuffer
extends AbstractPagedOutputView

AbstractPagedOutputView used by the BlockingBackChannel for transmitting superstep results.

Field Summary

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

headerLength, segmentSize

Constructor Summary

Constructors

Constructor and Description
SerializedUpdateBuffer()
SerializedUpdateBuffer(List<MemorySegment> memSegments, int segmentSize, IOManager ioManager)

Method Summary

Modifier and Type	Method and Description
List<MemorySegment>	close()
void	flush()
protected MemorySegment	nextSegment(MemorySegment current, int positionInCurrent) This method must return a segment.
org.apache.flink.runtime.iterative.io.SerializedUpdateBuffer.ReadEnd	switchBuffers()

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

SerializedUpdateBuffer

public SerializedUpdateBuffer()

SerializedUpdateBuffer

public SerializedUpdateBuffer(List<MemorySegment> memSegments,
                              int segmentSize,
                              IOManager ioManager)

Method Detail

nextSegment

protected MemorySegment nextSegment(MemorySegment current,
                                    int positionInCurrent)
                             throws IOException

Description copied from class: AbstractPagedOutputView

This method must return a segment. If no more segments are available, it must throw an EOFException.

Specified by:

nextSegment in class AbstractPagedOutputView

Parameters:

current - The current memory segment

positionInCurrent - The position in the segment, one after the last valid byte.

Returns:

The next memory segment.

Throws:

IOException

flush

public void flush()
           throws IOException

Throws:

IOException

switchBuffers

public org.apache.flink.runtime.iterative.io.SerializedUpdateBuffer.ReadEnd switchBuffers()
                                                                                   throws IOException

Throws:

IOException

close

public List<MemorySegment> close()