org.apache.hadoop.tools.rumen

Interface InputDemuxer

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

DefaultInputDemuxer

public interface InputDemuxer
extends Closeable

InputDemuxer dem-ultiplexes the input files into individual input streams.

Method Summary

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

Methods inherited from interface java.io.Closeable

close

Method Detail

bindTo

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

Bind the InputDemuxer to a particular file.

Parameters:

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

conf - Configuration

Throws:

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

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

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.

Returns:

the next <name, input> pair.

Throws:

IOException