org.apache.hudi.hadoop.fs.inline

Class InLineFsDataInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

java.io.DataInputStream

org.apache.hadoop.fs.FSDataInputStream

org.apache.hudi.hadoop.fs.inline.InLineFsDataInputStream

All Implemented Interfaces:

Closeable, DataInput, AutoCloseable, org.apache.hadoop.fs.ByteBufferPositionedReadable, org.apache.hadoop.fs.ByteBufferReadable, org.apache.hadoop.fs.CanSetDropBehind, org.apache.hadoop.fs.CanSetReadahead, org.apache.hadoop.fs.CanUnbuffer, org.apache.hadoop.fs.HasEnhancedByteBufferAccess, org.apache.hadoop.fs.HasFileDescriptor, org.apache.hadoop.fs.PositionedReadable, org.apache.hadoop.fs.Seekable, org.apache.hadoop.fs.StreamCapabilities

public class InLineFsDataInputStream
extends org.apache.hadoop.fs.FSDataInputStream

Inline FSDataInputStream. A startOffset that is passed in is assumed to be the start of the InputStream. All operations are handled having the startOffset as starting point.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.fs.StreamCapabilities

org.apache.hadoop.fs.StreamCapabilities.StreamCapability

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Fields inherited from interface org.apache.hadoop.fs.StreamCapabilities

DROPBEHIND, HFLUSH, HSYNC, PREADBYTEBUFFER, READAHEAD, READBYTEBUFFER, UNBUFFER

Constructor Summary

Constructors

Constructor and Description
InLineFsDataInputStream(long startOffset, org.apache.hadoop.fs.FSDataInputStream outerStream, long length)

Method Summary

Modifier and Type	Method and Description
FileDescriptor	getFileDescriptor()
long	getPos()
int	read(ByteBuffer buf)
ByteBuffer	read(org.apache.hadoop.io.ByteBufferPool bufferPool, int maxLength, EnumSet<org.apache.hadoop.fs.ReadOption> opts)
int	read(long position, byte[] buffer, int offset, int length)
void	readFully(long position, byte[] buffer)
void	readFully(long position, byte[] buffer, int offset, int length)
void	releaseBuffer(ByteBuffer buffer)
void	seek(long desired)
boolean	seekToNewSource(long targetPos)
void	setDropBehind(Boolean dropBehind)
void	setReadahead(Long readahead)
void	unbuffer()

Methods inherited from class org.apache.hadoop.fs.FSDataInputStream

getWrappedStream, hasCapability, read, read, toString

Methods inherited from class java.io.DataInputStream

read, read, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, readUTF, skipBytes

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Constructor Detail

InLineFsDataInputStream

public InLineFsDataInputStream(long startOffset,
                               org.apache.hadoop.fs.FSDataInputStream outerStream,
                               long length)
                        throws IOException

Throws:

IOException

Method Detail

seek

public void seek(long desired)
          throws IOException

Specified by:

seek in interface org.apache.hadoop.fs.Seekable

Overrides:

seek in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

getPos

public long getPos()
            throws IOException

Specified by:

getPos in interface org.apache.hadoop.fs.Seekable

Overrides:

getPos in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

read

public int read(long position,
                byte[] buffer,
                int offset,
                int length)
         throws IOException

Specified by:

read in interface org.apache.hadoop.fs.PositionedReadable

Overrides:

read in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

readFully

public void readFully(long position,
                      byte[] buffer,
                      int offset,
                      int length)
               throws IOException

Specified by:

readFully in interface org.apache.hadoop.fs.PositionedReadable

Overrides:

readFully in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

readFully

public void readFully(long position,
                      byte[] buffer)
               throws IOException

Specified by:

readFully in interface org.apache.hadoop.fs.PositionedReadable

Overrides:

readFully in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

seekToNewSource

public boolean seekToNewSource(long targetPos)
                        throws IOException

Specified by:

seekToNewSource in interface org.apache.hadoop.fs.Seekable

Overrides:

seekToNewSource in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

read

public int read(ByteBuffer buf)
         throws IOException

Specified by:

read in interface org.apache.hadoop.fs.ByteBufferReadable

Overrides:

read in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

getFileDescriptor

public FileDescriptor getFileDescriptor()
                                 throws IOException

Specified by:

getFileDescriptor in interface org.apache.hadoop.fs.HasFileDescriptor

Overrides:

getFileDescriptor in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

setReadahead

public void setReadahead(Long readahead)
                  throws IOException,
                         UnsupportedOperationException

Specified by:

setReadahead in interface org.apache.hadoop.fs.CanSetReadahead

Overrides:

setReadahead in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

UnsupportedOperationException

setDropBehind

public void setDropBehind(Boolean dropBehind)
                   throws IOException,
                          UnsupportedOperationException

Specified by:

setDropBehind in interface org.apache.hadoop.fs.CanSetDropBehind

Overrides:

setDropBehind in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

UnsupportedOperationException

read

public ByteBuffer read(org.apache.hadoop.io.ByteBufferPool bufferPool,
                       int maxLength,
                       EnumSet<org.apache.hadoop.fs.ReadOption> opts)
                throws IOException,
                       UnsupportedOperationException

Specified by:

read in interface org.apache.hadoop.fs.HasEnhancedByteBufferAccess

Overrides:

read in class org.apache.hadoop.fs.FSDataInputStream

Throws:

IOException

UnsupportedOperationException

releaseBuffer

public void releaseBuffer(ByteBuffer buffer)

Specified by:

releaseBuffer in interface org.apache.hadoop.fs.HasEnhancedByteBufferAccess

Overrides:

releaseBuffer in class org.apache.hadoop.fs.FSDataInputStream

unbuffer

public void unbuffer()

Specified by:

unbuffer in interface org.apache.hadoop.fs.CanUnbuffer

Overrides:

unbuffer in class org.apache.hadoop.fs.FSDataInputStream