edu.iu.dsc.tws.data.hdfs

Class HadoopDataInputStream

java.lang.Object

java.io.InputStream

edu.iu.dsc.tws.api.data.FSDataInputStream

edu.iu.dsc.tws.data.hdfs.HadoopDataInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public final class HadoopDataInputStream
extends FSDataInputStream

Field Summary

Fields

Modifier and Type	Field and Description
static int	MIN_SKIP_BYTES

Constructor Summary

Constructors

Constructor and Description
HadoopDataInputStream(org.apache.hadoop.fs.FSDataInputStream dataInputStream)

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
void	forceSeek(long seekPos)
org.apache.hadoop.fs.FSDataInputStream	getHadoopInputStream()
long	getPos() Gets the current position in the input stream.
java.io.Reader	getReader()
int	read()
int	read(byte[] buffer, int offset, int length)
void	seek(long seekPosition) Seek to the given offset from the start of the file.
long	skip(long n)
void	skipFully(long bytes)

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Field Detail

MIN_SKIP_BYTES

public static final int MIN_SKIP_BYTES

See Also:

Constant Field Values

Constructor Detail

HadoopDataInputStream

public HadoopDataInputStream(org.apache.hadoop.fs.FSDataInputStream dataInputStream)

Method Detail

seek

public void seek(long seekPosition)
          throws java.io.IOException

Description copied from class: FSDataInputStream

Seek to the given offset from the start of the file. The next read() will be from that location. Can't seek past the end of the file.

Specified by:

seek in class FSDataInputStream

Parameters:

seekPosition - the desired offset

Throws:

java.io.IOException - Thrown if an error occurred while seeking inside the input stream.

getPos

public long getPos()
            throws java.io.IOException

Description copied from class: FSDataInputStream

Gets the current position in the input stream.

Specified by:

getPos in class FSDataInputStream

Returns:

current position in the input stream

Throws:

java.io.IOException - Thrown if an I/O error occurred in the underlying stream implementation while accessing the stream's position.

getReader

public java.io.Reader getReader()

Specified by:

getReader in class FSDataInputStream

read

public int read()
         throws java.io.IOException

Specified by:

read in class java.io.InputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream

Throws:

java.io.IOException

read

public int read(byte[] buffer,
                int offset,
                int length)
         throws java.io.IOException

Overrides:

read in class java.io.InputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.InputStream

Throws:

java.io.IOException

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class java.io.InputStream

Throws:

java.io.IOException

getHadoopInputStream

public org.apache.hadoop.fs.FSDataInputStream getHadoopInputStream()

forceSeek

public void forceSeek(long seekPos)
               throws java.io.IOException

Throws:

java.io.IOException

skipFully

public void skipFully(long bytes)
               throws java.io.IOException

Throws:

java.io.IOException