org.apache.hadoop.mapred
Class IFileOutputStream

java.lang.Object
  java.io.OutputStream
      java.io.FilterOutputStream
          org.apache.hadoop.mapred.IFileOutputStream

All Implemented Interfaces:

Closeable, Flushable

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class IFileOutputStream
extends FilterOutputStream

A Checksum output stream. Checksum for the contents of the file is calculated and appended to the end of the file on close of the stream. Used for IFiles

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

IFileOutputStream(OutputStream out)
Create a checksum output stream that writes the bytes to the given stream.

Method Summary

void	close()
void	finish() Finishes writing data to the output stream, by writing the checksum bytes to the end.
void	write(byte[] b, int off, int len) Write bytes to the stream.
void	write(int b)

Methods inherited from class java.io.FilterOutputStream

flush, write

Methods inherited from class java.lang.Object

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

Constructor Detail

IFileOutputStream

public IFileOutputStream(OutputStream out)

Create a checksum output stream that writes the bytes to the given stream.

Parameters:

out -

Method Detail

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Overrides:

close in class FilterOutputStream

Throws:

IOException

finish

public void finish()
            throws IOException

Finishes writing data to the output stream, by writing the checksum bytes to the end. The underlying stream is not closed.

Throws:

IOException

write

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

Write bytes to the stream.

Overrides:

write in class FilterOutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Overrides:

write in class FilterOutputStream

Throws:

IOException