Package org.apache.hadoop.hdfs.web

Class WebHdfsFileSystem.WebHdfsInputStream

java.lang.Object

java.io.InputStream

org.apache.hadoop.fs.FSInputStream

org.apache.hadoop.hdfs.web.WebHdfsFileSystem.WebHdfsInputStream

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.fs.PositionedReadable, org.apache.hadoop.fs.Seekable

Enclosing class:

WebHdfsFileSystem

@VisibleForTesting
public class WebHdfsFileSystem.WebHdfsInputStream
extends org.apache.hadoop.fs.FSInputStream

This class is used for opening, reading, and seeking files while using the WebHdfsFileSystem. This class will invoke the retry policy when performing any of these actions.

Method Summary

Modifier and Type	Method	Description
void	close()
protected int	getBufferSize()
long	getFileLength()
protected org.apache.hadoop.fs.Path	getPath()
long	getPos()
int	read()
int	read(byte[] b, int off, int len)
void	seek(long newPos)
boolean	seekToNewSource(long targetPos)
void	setFileLength(long len)

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

read, readFully, readFully, toString, validatePositionedReadArgs

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.fs.PositionedReadable

maxReadSizeForVectorReads, minSeekForVectorReads, readVectored, readVectored

Method Details

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

read

public int read(byte[] b,
 int off,
 int len)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

seek

public void seek(long newPos)
          throws IOException

Specified by:

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

Specified by:

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

Throws:

IOException

getPos

public long getPos()
            throws IOException

Specified by:

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

Specified by:

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

Throws:

IOException

getBufferSize

protected int getBufferSize()
                     throws IOException

Throws:

IOException

getPath

protected org.apache.hadoop.fs.Path getPath()
                                     throws IOException

Throws:

IOException

seekToNewSource

public boolean seekToNewSource(long targetPos)
                        throws IOException

Specified by:

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

Specified by:

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

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException

setFileLength

public void setFileLength(long len)

getFileLength

public long getFileLength()