eu.stratosphere.example.java.record.sort

Class ReduceGroupSort.IdentityReducer

java.lang.Object

eu.stratosphere.api.common.functions.AbstractFunction

eu.stratosphere.api.java.record.functions.ReduceFunction

eu.stratosphere.example.java.record.sort.ReduceGroupSort.IdentityReducer

All Implemented Interfaces:

Function, GenericReducer<Record,Record>, Serializable

Enclosing class:

ReduceGroupSort

public static class ReduceGroupSort.IdentityReducer
extends ReduceFunction
implements Serializable

Increments the first field of the first record of the reduce group by 100 and emits it. Then all remaining records of the group are emitted. *

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ReduceGroupSort.IdentityReducer()

Method Summary

Methods

Modifier and Type	Method and Description
void	reduce(Iterator<Record> records, Collector<Record> out)

Methods inherited from class eu.stratosphere.api.java.record.functions.ReduceFunction

combine

Methods inherited from class eu.stratosphere.api.common.functions.AbstractFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface eu.stratosphere.api.common.functions.Function

close, getRuntimeContext, open, setRuntimeContext

Constructor Detail

ReduceGroupSort.IdentityReducer

public ReduceGroupSort.IdentityReducer()

Method Detail

reduce

public void reduce(Iterator<Record> records,
          Collector<Record> out)

Specified by:

reduce in interface GenericReducer<Record,Record>

Specified by:

reduce in class ReduceFunction