Package org.apache.flink.state.forst.fs.cache

Class CachedDataOutputStream

java.lang.Object

java.io.OutputStream

org.apache.flink.core.fs.FSDataOutputStream

org.apache.flink.state.forst.fs.cache.CachedDataOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class CachedDataOutputStream
extends org.apache.flink.core.fs.FSDataOutputStream

A FSDataOutputStream delegates requests to other one and supports writing data with ByteBuffer. The data will be written to the original output stream and the cache output stream. When the stream is closed, the data will be put into the cache and ready to be read.

Constructor Summary

Constructors

Constructor	Description
CachedDataOutputStream(org.apache.flink.core.fs.Path originalPath, org.apache.flink.core.fs.Path cachePath, org.apache.flink.core.fs.FSDataOutputStream originalOutputStream, org.apache.flink.core.fs.FSDataOutputStream cacheOutputStream, FileBasedCache cache)

Method Summary

Modifier and Type	Method	Description
void	close()
void	flush()
long	getPos()
void	sync()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Constructor Details

CachedDataOutputStream

public CachedDataOutputStream(org.apache.flink.core.fs.Path originalPath,
 org.apache.flink.core.fs.Path cachePath,
 org.apache.flink.core.fs.FSDataOutputStream originalOutputStream,
 @Nullable
 org.apache.flink.core.fs.FSDataOutputStream cacheOutputStream,
 FileBasedCache cache)

Method Details

getPos

public long getPos()
            throws IOException

Specified by:

getPos in class org.apache.flink.core.fs.FSDataOutputStream

Throws:

IOException

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

write

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

Overrides:

write in class OutputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Specified by:

flush in class org.apache.flink.core.fs.FSDataOutputStream

Throws:

IOException

sync

public void sync()
          throws IOException

Specified by:

sync in class org.apache.flink.core.fs.FSDataOutputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class org.apache.flink.core.fs.FSDataOutputStream

Throws:

IOException