edu.stolaf.cs.wmrserver.streaming
Class PipeMapper

java.lang.Object
  edu.stolaf.cs.wmrserver.streaming.PipeMapRed
      edu.stolaf.cs.wmrserver.streaming.PipeMapper

All Implemented Interfaces:

java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper

public class PipeMapper
extends PipeMapRed
implements org.apache.hadoop.mapred.Mapper

A generic Mapper bridge. It delegates operations to an external program via stdin and stdout.

Field Summary

Fields inherited from class edu.stolaf.cs.wmrserver.streaming.PipeMapRed

LOG, outerrThreadsThrowable

Constructor Summary

PipeMapper()

Method Summary

void	close()
void	configure(org.apache.hadoop.mapred.JobConf job)
void	map(java.lang.Object key, java.lang.Object value, org.apache.hadoop.mapred.OutputCollector output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class edu.stolaf.cs.wmrserver.streaming.PipeMapRed

getContext, mapRedFinished

Methods inherited from class java.lang.Object

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

Constructor Detail

PipeMapper

public PipeMapper()

Method Detail

configure

public void configure(org.apache.hadoop.mapred.JobConf job)

Specified by:

configure in interface org.apache.hadoop.mapred.JobConfigurable

Overrides:

configure in class PipeMapRed

map

public void map(java.lang.Object key,
                java.lang.Object value,
                org.apache.hadoop.mapred.OutputCollector output,
                org.apache.hadoop.mapred.Reporter reporter)
         throws java.io.IOException

Specified by:

map in interface org.apache.hadoop.mapred.Mapper

Throws:

java.io.IOException

close

public void close()

Specified by:

close in interface java.io.Closeable