alluxio.examples.keyvalue.hadoop

Class CloneStoreMapReduce

java.lang.Object

alluxio.examples.keyvalue.hadoop.CloneStoreMapReduce

public final class CloneStoreMapReduce
extends Object

This MapReduce job reads a key-value store and saves the same key-value data to another key-value store with a different URI.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CloneStoreMapReduce.CloneStoreMapper The mapper emits all key-value pairs it receives to reducers.
static class	CloneStoreMapReduce.CloneStoreReducer The reducer writes all key-value pairs it receives to the new key-value store.

Constructor Summary

Constructors

Constructor and Description
CloneStoreMapReduce() Constructs a new CloneStoreMapReduce.

Method Summary

Methods

Modifier and Type	Method and Description
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

CloneStoreMapReduce

public CloneStoreMapReduce()

Constructs a new CloneStoreMapReduce.

Method Detail

main

public static void main(String[] args)
                 throws Exception

Parameters:

args - two parameters, the first is the input key-value store path, the second is the output key-value store path

Throws:

Exception - if any exception happens