Package com.mapr.fs

Class MapRFsInStream

java.lang.Object

java.io.InputStream

org.apache.hadoop.fs.FSInputStream

com.mapr.fs.MapRFsInStream

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.fs.ByteBufferReadable, org.apache.hadoop.fs.CanSetDropBehind, org.apache.hadoop.fs.CanSetReadahead, org.apache.hadoop.fs.PositionedReadable, org.apache.hadoop.fs.Seekable

public class MapRFsInStream
extends org.apache.hadoop.fs.FSInputStream
implements org.apache.hadoop.fs.ByteBufferReadable, org.apache.hadoop.fs.CanSetReadahead, org.apache.hadoop.fs.CanSetDropBehind

Field Summary

Fields

Modifier and Type	Field	Description
static final org.apache.commons.logging.Log	LOG

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MapRFsInStream(long clntPtr, long filePtr, String filename, org.apache.hadoop.fs.FileSystem.Statistics stats, com.mapr.fs.jni.InodeAttributes attr, com.mapr.fs.jni.MapRUserInfo userInfo)
	MapRFsInStream(long clntPtr, long filePtr, String filename, org.apache.hadoop.fs.FileSystem.Statistics stats, com.mapr.fs.jni.MapRUserInfo userInfo)

Method Summary

Modifier and Type	Method	Description
void	adviseFile(org.apache.hadoop.fs.FSDataInputStream.FadviseType type, long offset, long count)
int	available()
void	close()
int	getCacheSize(com.mapr.fs.jni.InodeAttributes iattr)
long	getChunkSize()
long[]	getFidServers()
String	getFidStr()
long	getFileLength()
long	getPos()
void	openAndRead(org.apache.hadoop.fs.PathId pfid, String file, int length)
int	read()
int	read(byte[] buffer, int bufOffset, int length)
int	read(long startPos, byte[] buffer, int bufOffset, int length)
int	read(ByteBuffer buf)
void	readFully(long pos, byte[] buffer)
void	readFully(long pos, byte[] buffer, int bufOffset, int length)
void	seek(long pos)
boolean	seekToNewSource(long pos)
void	setDropBehind(Boolean dropBehind)
void	setReadahead(Long readAhead)

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

toString, validatePositionedReadArgs

Methods inherited from class java.io.InputStream

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

Field Details

LOG

public static final org.apache.commons.logging.Log LOG

Constructor Details

MapRFsInStream

protected MapRFsInStream(long clntPtr,
 long filePtr,
 String filename,
 org.apache.hadoop.fs.FileSystem.Statistics stats,
 com.mapr.fs.jni.InodeAttributes attr,
 com.mapr.fs.jni.MapRUserInfo userInfo)
                  throws IOException

Throws:

IOException

MapRFsInStream

public MapRFsInStream(long clntPtr,
 long filePtr,
 String filename,
 org.apache.hadoop.fs.FileSystem.Statistics stats,
 com.mapr.fs.jni.MapRUserInfo userInfo)
               throws IOException

Throws:

IOException

Method Details

getFidStr

public String getFidStr()

getFidServers

public long[] getFidServers()

getChunkSize

public long getChunkSize()

openAndRead

public void openAndRead(org.apache.hadoop.fs.PathId pfid,
 String file,
 int length)
                 throws IOException

Throws:

IOException

getCacheSize

public int getCacheSize(com.mapr.fs.jni.InodeAttributes iattr)

getPos

public long getPos()

Specified by:

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

Specified by:

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

getFileLength

public long getFileLength()

available

public int available()
              throws IOException

Overrides:

available in class InputStream

Throws:

IOException

seekToNewSource

public boolean seekToNewSource(long pos)

Specified by:

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

Specified by:

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

read

public int read(byte[] buffer,
 int bufOffset,
 int length)
         throws IOException

Overrides:

read in class InputStream

Throws:

IOException

read

public int read(ByteBuffer buf)
         throws IOException

Specified by:

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

Throws:

IOException

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Specified by:

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

Specified by:

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

Throws:

IOException

read

public int read(long startPos,
 byte[] buffer,
 int bufOffset,
 int length)
         throws IOException

Specified by:

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

Overrides:

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

Throws:

IOException

readFully

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

Specified by:

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

Overrides:

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

Throws:

IOException

readFully

public void readFully(long pos,
 byte[] buffer,
 int bufOffset,
 int length)
               throws IOException

Specified by:

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

Overrides:

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

Throws:

IOException

adviseFile

public void adviseFile(org.apache.hadoop.fs.FSDataInputStream.FadviseType type,
 long offset,
 long count)
                throws IOException

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

setReadahead

public void setReadahead(Long readAhead)

Specified by:

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

setDropBehind

public void setDropBehind(Boolean dropBehind)

Specified by:

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