org.apache.flink.table.runtime.io

Class CompressedBlockChannelReader

java.lang.Object

org.apache.flink.table.runtime.io.CompressedBlockChannelReader

All Implemented Interfaces:

org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader<org.apache.flink.core.memory.MemorySegment>, org.apache.flink.runtime.io.disk.iomanager.FileIOChannel, org.apache.flink.runtime.io.disk.iomanager.RequestDoneCallback<org.apache.flink.runtime.io.network.buffer.Buffer>, org.apache.flink.runtime.io.network.buffer.BufferRecycler

public class CompressedBlockChannelReader
extends Object
implements org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader<org.apache.flink.core.memory.MemorySegment>, org.apache.flink.runtime.io.disk.iomanager.RequestDoneCallback<org.apache.flink.runtime.io.network.buffer.Buffer>, org.apache.flink.runtime.io.network.buffer.BufferRecycler

Compressed block channel reader provides a scenario where MemorySegment must be maintained.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.Enumerator, org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.ID

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

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

Constructor Summary

Constructors

Constructor and Description
CompressedBlockChannelReader(org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager, org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.ID channel, LinkedBlockingQueue<org.apache.flink.core.memory.MemorySegment> blockQueue, org.apache.flink.runtime.io.compression.BlockCompressionFactory codecFactory, int preferBlockSize, int segmentSize)

Method Summary

Modifier and Type	Method and Description
void	close()
void	closeAndDelete()
void	deleteChannel()
org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.ID	getChannelID()
org.apache.flink.core.memory.MemorySegment	getNextReturnedBlock()
FileChannel	getNioFileChannel()
LinkedBlockingQueue<org.apache.flink.core.memory.MemorySegment>	getReturnQueue()
long	getSize()
boolean	isClosed()
void	readBlock(org.apache.flink.core.memory.MemorySegment segment)
void	recycle(org.apache.flink.core.memory.MemorySegment segment)
void	requestFailed(org.apache.flink.runtime.io.network.buffer.Buffer buffer, IOException e)
void	requestSuccessful(org.apache.flink.runtime.io.network.buffer.Buffer request)
void	seekToPosition(long position)

Methods inherited from class java.lang.Object

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

Constructor Detail

CompressedBlockChannelReader

public CompressedBlockChannelReader(org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager,
                                    org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.ID channel,
                                    LinkedBlockingQueue<org.apache.flink.core.memory.MemorySegment> blockQueue,
                                    org.apache.flink.runtime.io.compression.BlockCompressionFactory codecFactory,
                                    int preferBlockSize,
                                    int segmentSize)
                             throws IOException

Throws:

IOException

Method Detail

readBlock

public void readBlock(org.apache.flink.core.memory.MemorySegment segment)
               throws IOException

Specified by:

readBlock in interface org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader<org.apache.flink.core.memory.MemorySegment>

Throws:

IOException

seekToPosition

public void seekToPosition(long position)
                    throws IOException

Specified by:

seekToPosition in interface org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader<org.apache.flink.core.memory.MemorySegment>

Throws:

IOException

getNextReturnedBlock

public org.apache.flink.core.memory.MemorySegment getNextReturnedBlock()
                                                                throws IOException

Specified by:

getNextReturnedBlock in interface org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader<org.apache.flink.core.memory.MemorySegment>

Throws:

IOException

getReturnQueue

public LinkedBlockingQueue<org.apache.flink.core.memory.MemorySegment> getReturnQueue()

Specified by:

getReturnQueue in interface org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader<org.apache.flink.core.memory.MemorySegment>

getChannelID

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

Specified by:

getChannelID in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

getSize

public long getSize()
             throws IOException

Specified by:

getSize in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

Throws:

IOException

isClosed

public boolean isClosed()

Specified by:

isClosed in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

close

public void close()
           throws IOException

Specified by:

close in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

Throws:

IOException

deleteChannel

public void deleteChannel()

Specified by:

deleteChannel in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

closeAndDelete

public void closeAndDelete()
                    throws IOException

Specified by:

closeAndDelete in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

Throws:

IOException

getNioFileChannel

public FileChannel getNioFileChannel()

Specified by:

getNioFileChannel in interface org.apache.flink.runtime.io.disk.iomanager.FileIOChannel

requestSuccessful

public void requestSuccessful(org.apache.flink.runtime.io.network.buffer.Buffer request)

Specified by:

requestSuccessful in interface org.apache.flink.runtime.io.disk.iomanager.RequestDoneCallback<org.apache.flink.runtime.io.network.buffer.Buffer>

requestFailed

public void requestFailed(org.apache.flink.runtime.io.network.buffer.Buffer buffer,
                          IOException e)

Specified by:

requestFailed in interface org.apache.flink.runtime.io.disk.iomanager.RequestDoneCallback<org.apache.flink.runtime.io.network.buffer.Buffer>

recycle

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

Specified by:

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