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:

org.apache.tez.runtime.api.LogicalIOProcessor, org.apache.tez.runtime.api.LogicalIOProcessorFrameworkInterface, org.apache.tez.runtime.api.Processor, org.apache.tez.runtime.api.ProcessorFrameworkInterface

Enclosing class:

SortMergeJoinExample

public static class SortMergeJoinExample.SortMergeJoinProcessor
extends org.apache.tez.mapreduce.processor.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(org.apache.tez.runtime.api.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(org.apache.tez.runtime.api.ProcessorContext context)

Method Detail

run

public void run()
         throws Exception

Specified by:

run in class org.apache.tez.runtime.library.processor.SimpleProcessor

Throws:

Exception