org.apache.tez.examples

Class SortMergeJoinExample.SortMergeJoinProcessor

java.lang.Object

org.apache.tez.runtime.api.AbstractLogicalIOProcessor

org.apache.tez.runtime.library.processor.SimpleProcessor

org.apache.tez.mapreduce.processor.SimpleMRProcessor

org.apache.tez.examples.SortMergeJoinExample.SortMergeJoinProcessor

All Implemented Interfaces:

LogicalIOProcessor, LogicalIOProcessorFrameworkInterface, Processor, ProcessorFrameworkInterface

Enclosing class:

SortMergeJoinExample

public static class SortMergeJoinExample.SortMergeJoinProcessor
extends SimpleMRProcessor

Join 2 inputs which has already been sorted. Check the algorithm here Sort-Merge Join
It require the keys in both datasets are unique.
Disclaimer: The join code here is written as a tutorial for the APIs and not for performance.

Field Summary

Fields inherited from class org.apache.tez.runtime.library.processor.SimpleProcessor

inputs, outputs, progressHelper

Constructor Summary

Constructors

Constructor and Description
SortMergeJoinProcessor(ProcessorContext context)

Method Summary

Modifier and Type	Method and Description
void	run()

Methods inherited from class org.apache.tez.mapreduce.processor.SimpleMRProcessor

postOp

Methods inherited from class org.apache.tez.runtime.library.processor.SimpleProcessor

close, getInputs, getOutputs, handleEvents, initialize, preOp, run

Methods inherited from class org.apache.tez.runtime.api.AbstractLogicalIOProcessor

abort, getContext

Methods inherited from class java.lang.Object

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

Constructor Detail

SortMergeJoinProcessor

public SortMergeJoinProcessor(ProcessorContext context)

Method Detail

run

public void run()
         throws Exception

Specified by:

run in class SimpleProcessor

Throws:

Exception