Package org.apache.hadoop.tools.rumen

Class DefaultInputDemuxer

java.lang.Object

org.apache.hadoop.tools.rumen.DefaultInputDemuxer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, InputDemuxer

public class DefaultInputDemuxer
extends java.lang.Object
implements InputDemuxer

DefaultInputDemuxer acts as a pass-through demuxer. It just opens each file and returns back the input stream. If the input is compressed, it would return a decompression stream.

Constructor Summary

Constructors

Constructor	Description
DefaultInputDemuxer()

Method Summary

Modifier and Type	Method	Description
void	bindTo(org.apache.hadoop.fs.Path path, org.apache.hadoop.conf.Configuration conf)	Bind the InputDemuxer to a particular file.
void	close()
org.apache.hadoop.tools.rumen.Pair<java.lang.String,java.io.InputStream>	getNext()	Get the next <name, input> pair.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultInputDemuxer

public DefaultInputDemuxer()

Method Detail

bindTo

public void bindTo(org.apache.hadoop.fs.Path path,
                   org.apache.hadoop.conf.Configuration conf)
            throws java.io.IOException

Description copied from interface: InputDemuxer

Bind the InputDemuxer to a particular file.

Specified by:

bindTo in interface InputDemuxer

Parameters:

path - The path to the file it should bind to.

conf - Configuration

Throws:

java.io.IOException - Returns true when the binding succeeds. If the file can be read but is in the wrong format, returns false. IOException is reserved for read errors.

getNext

public org.apache.hadoop.tools.rumen.Pair<java.lang.String,java.io.InputStream> getNext()
                                                                                       throws java.io.IOException

Description copied from interface: InputDemuxer

Get the next <name, input> pair. The name should preserve the original job history file or job conf file name. The input object should be closed before calling getNext() again. The old input object would be invalid after calling getNext() again.

Specified by:

getNext in interface InputDemuxer

Returns:

the next <name, input> pair.

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException