alluxio.examples.keyvalue.hadoop

Class CloneStoreMapReduce.CloneStoreReducer

java.lang.Object

org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

alluxio.examples.keyvalue.hadoop.CloneStoreMapReduce.CloneStoreReducer

Enclosing class:

CloneStoreMapReduce

public static class CloneStoreMapReduce.CloneStoreReducer
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

The reducer writes all key-value pairs it receives to the new key-value store.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer

org.apache.hadoop.mapreduce.Reducer.Context

Constructor Summary

Constructors

Constructor and Description
CloneStoreMapReduce.CloneStoreReducer() Constructs a new CloneStoreMapReduce.CloneStoreReducer.

Method Summary

Methods

Modifier and Type	Method and Description
void	reduce(org.apache.hadoop.io.BytesWritable key, Iterable<org.apache.hadoop.io.BytesWritable> values, org.apache.hadoop.mapreduce.Reducer.Context context)

Methods inherited from class org.apache.hadoop.mapreduce.Reducer

cleanup, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

CloneStoreMapReduce.CloneStoreReducer

public CloneStoreMapReduce.CloneStoreReducer()

Constructs a new CloneStoreMapReduce.CloneStoreReducer.

Method Detail

reduce

public void reduce(org.apache.hadoop.io.BytesWritable key,
          Iterable<org.apache.hadoop.io.BytesWritable> values,
          org.apache.hadoop.mapreduce.Reducer.Context context)
            throws IOException,
                   InterruptedException

Overrides:

reduce in class org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.BytesWritable>

Throws:

IOException

InterruptedException