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java.lang.Objectjava.io.InputStream
org.apache.hadoop.fs.FSInputStream
public abstract class FSInputStream
FSInputStream is a generic old InputStream with a little bit of RAF-style seek ability.
| Constructor Summary | |
|---|---|
FSInputStream()
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| Method Summary | |
|---|---|
abstract long |
getPos()
Return the current offset from the start of the file |
int |
read(long position,
byte[] buffer,
int offset,
int length)
Read upto the specified number of bytes, from a given position within a file, and return the number of bytes read. |
void |
readFully(long position,
byte[] buffer)
Read number of bytes equalt to the length of the buffer, from a given position within a file. |
void |
readFully(long position,
byte[] buffer,
int offset,
int length)
Read the specified number of bytes, from a given position within a file. |
abstract void |
seek(long pos)
Seek to the given offset from the start of the file. |
abstract boolean |
seekToNewSource(long targetPos)
Seeks a different copy of the data. |
| Methods inherited from class java.io.InputStream |
|---|
available, close, mark, markSupported, read, read, read, reset, skip |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public FSInputStream()
| Method Detail |
|---|
public abstract void seek(long pos)
throws IOException
seek in interface SeekableIOException
public abstract long getPos()
throws IOException
getPos in interface SeekableIOException
public abstract boolean seekToNewSource(long targetPos)
throws IOException
seekToNewSource in interface SeekableIOException
public int read(long position,
byte[] buffer,
int offset,
int length)
throws IOException
PositionedReadable
read in interface PositionedReadableIOException
public void readFully(long position,
byte[] buffer,
int offset,
int length)
throws IOException
PositionedReadable
readFully in interface PositionedReadableIOException
public void readFully(long position,
byte[] buffer)
throws IOException
PositionedReadable
readFully in interface PositionedReadableIOException
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