org.apache.flink.table.runtime.io

Class CompressedHeaderlessChannelReaderInputView

java.lang.Object

org.apache.flink.runtime.memory.AbstractPagedInputView

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

org.apache.flink.table.runtime.io.CompressedHeaderlessChannelReaderInputView

All Implemented Interfaces:

DataInput, org.apache.flink.core.memory.DataInputView, 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 CompressedHeaderlessChannelReaderInputView
extends org.apache.flink.runtime.io.disk.iomanager.AbstractChannelReaderInputView
implements org.apache.flink.runtime.io.disk.iomanager.RequestDoneCallback<org.apache.flink.runtime.io.network.buffer.Buffer>, org.apache.flink.runtime.io.network.buffer.BufferRecycler

A DataInputView that is backed by a BufferFileReader, making it effectively a data input stream. The view reads it data in blocks from the underlying channel and decompress it before returning to caller. The view can only read data that has been written by CompressedHeaderlessChannelWriterOutputView, due to block formatting.

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.AbstractPagedInputView

headerLength

Constructor Summary

Constructors

Constructor and Description
CompressedHeaderlessChannelReaderInputView(org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.ID id, org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager, org.apache.flink.runtime.io.compression.BlockCompressionFactory compressionCodecFactory, int compressionBlockSize, int numBlocks)

Method Summary

Modifier and Type	Method and Description
List<org.apache.flink.core.memory.MemorySegment>	close()
org.apache.flink.runtime.io.disk.iomanager.FileIOChannel	getChannel()
protected int	getLimitForSegment(org.apache.flink.core.memory.MemorySegment segment)
org.apache.flink.runtime.io.disk.iomanager.BufferFileReader	getReader()
boolean	isClosed()
protected org.apache.flink.core.memory.MemorySegment	nextSegment(org.apache.flink.core.memory.MemorySegment current)
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)

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

advance, clear, doAdvance, getCurrentPositionInSegment, getCurrentSegment, getCurrentSegmentLimit, getHeaderLength, read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, seekInput, skipBytes, skipBytesToRead

Methods inherited from class java.lang.Object

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

Constructor Detail

CompressedHeaderlessChannelReaderInputView

public CompressedHeaderlessChannelReaderInputView(org.apache.flink.runtime.io.disk.iomanager.FileIOChannel.ID id,
                                                  org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager,
                                                  org.apache.flink.runtime.io.compression.BlockCompressionFactory compressionCodecFactory,
                                                  int compressionBlockSize,
                                                  int numBlocks)
                                           throws IOException

Throws:

IOException

Method Detail

nextSegment

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

Specified by:

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

Throws:

IOException

getReader

public org.apache.flink.runtime.io.disk.iomanager.BufferFileReader getReader()

getLimitForSegment

protected int getLimitForSegment(org.apache.flink.core.memory.MemorySegment segment)

Specified by:

getLimitForSegment in class org.apache.flink.runtime.memory.AbstractPagedInputView

close

public List<org.apache.flink.core.memory.MemorySegment> close()
                                                       throws IOException

Specified by:

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

Throws:

IOException

getChannel

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

Specified by:

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

isClosed

public boolean isClosed()

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