Package org.apache.flink.runtime.io.network.buffer

Class CompositeBuffer

java.lang.Object

org.apache.flink.runtime.io.network.buffer.AbstractCompositeBuffer

org.apache.flink.runtime.io.network.buffer.CompositeBuffer

All Implemented Interfaces:

Buffer

public class CompositeBuffer
extends AbstractCompositeBuffer

An implementation of Buffer which contains multiple partial buffers for network data communication.

This class used for that all partial buffers are derived from the same initial write buffer due to the potential fragmentation during the read process.

Nested Class Summary

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

Buffer.DataType

Field Summary

Fields inherited from class org.apache.flink.runtime.io.network.buffer.AbstractCompositeBuffer

allocator, currentLength, dataType, isCompressed, length, partialBuffers

Constructor Summary

Constructors

Constructor	Description
CompositeBuffer(Buffer.DataType dataType, int length, boolean isCompressed)
CompositeBuffer(BufferHeader header)

Method Summary

Modifier and Type	Method	Description
void	addPartialBuffer(Buffer buffer)
org.apache.flink.shaded.netty4.io.netty.buffer.ByteBuf	asByteBuf()
Buffer	getFullBufferData(org.apache.flink.core.memory.MemorySegment segment)	Returns the full buffer data in one piece of MemorySegment.

Methods inherited from class org.apache.flink.runtime.io.network.buffer.AbstractCompositeBuffer

getDataType, getMaxCapacity, getMemorySegment, getMemorySegmentOffset, getNioBuffer, getNioBufferReadable, getPartialBuffers, getReaderIndex, getRecycler, getSize, isBuffer, isCompressed, isRecycled, missingLength, readableBytes, readOnlySlice, readOnlySlice, recycleBuffer, refCnt, retainBuffer, setAllocator, setCompressed, setDataType, setReaderIndex, setRecycler, setSize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.runtime.io.network.buffer.Buffer

toDebugString

Constructor Details

CompositeBuffer

public CompositeBuffer(Buffer.DataType dataType,
 int length,
 boolean isCompressed)

CompositeBuffer

public CompositeBuffer(BufferHeader header)

Method Details

asByteBuf

public org.apache.flink.shaded.netty4.io.netty.buffer.ByteBuf asByteBuf()

Returns:

self as ByteBuf implementation.

getFullBufferData

public Buffer getFullBufferData(org.apache.flink.core.memory.MemorySegment segment)

Returns the full buffer data in one piece of MemorySegment. If there is multiple partial buffers, the partial data will be copied to the given target MemorySegment.

addPartialBuffer

public void addPartialBuffer(Buffer buffer)

Specified by:

addPartialBuffer in class AbstractCompositeBuffer