alluxio.master.journal.checkpoint

Class OptimizedCheckpointOutputStream

java.lang.Object

java.io.OutputStream

alluxio.master.journal.checkpoint.OptimizedCheckpointOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class OptimizedCheckpointOutputStream
extends OutputStream

OutputStream to write checkpoint files efficiently.

Field Summary

Fields

Modifier and Type	Field and Description
static int	BUFFER_SIZE

Constructor Summary

Constructors

Constructor and Description
OptimizedCheckpointOutputStream(File file, MessageDigest digest)
OptimizedCheckpointOutputStream(File file, MessageDigest digest, int bufferSize) Constructor used for benchmarking.

Method Summary

Modifier and Type	Method and Description
void	close()
void	write(int b)

Methods inherited from class java.io.OutputStream

flush, write, write

Methods inherited from class java.lang.Object

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

Field Detail

BUFFER_SIZE

public static final int BUFFER_SIZE

Constructor Detail

OptimizedCheckpointOutputStream

public OptimizedCheckpointOutputStream(File file,
                                       MessageDigest digest)
                                throws IOException

Parameters:

file - where the checkpoint will be written

digest - to ensure uncorrupted data

Throws:

IOException - propagates wrapped output stream exceptions

OptimizedCheckpointOutputStream

public OptimizedCheckpointOutputStream(File file,
                                       MessageDigest digest,
                                       int bufferSize)
                                throws IOException

Constructor used for benchmarking.

Parameters:

file - where the checkpoint will be written

digest - to ensure uncorrupted data

bufferSize - the buffer size that the output stream should use

Throws:

IOException

Method Detail

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Overrides:

close in class OutputStream

Throws:

IOException