edu.umd.cloud9.mapred

Class NullMapper

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

edu.umd.cloud9.mapred.NullMapper

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

public abstract class NullMapper
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Constructor Summary

Constructors

Constructor and Description
NullMapper()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(org.apache.hadoop.mapred.JobConf conf)
void	map(org.apache.hadoop.io.NullWritable key, org.apache.hadoop.io.NullWritable value, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable> output, org.apache.hadoop.mapred.Reporter reporter)
abstract void	run(org.apache.hadoop.mapred.JobConf conf, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.MapReduceBase

close

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Closeable

close

Constructor Detail

NullMapper

public NullMapper()

Method Detail

configure

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

Specified by:

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

Overrides:

configure in class org.apache.hadoop.mapred.MapReduceBase

map

public void map(org.apache.hadoop.io.NullWritable key,
       org.apache.hadoop.io.NullWritable value,
       org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable> output,
       org.apache.hadoop.mapred.Reporter reporter)
         throws IOException

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException

run

public abstract void run(org.apache.hadoop.mapred.JobConf conf,
       org.apache.hadoop.mapred.Reporter reporter)
                  throws IOException

Throws:

IOException