co.cask.cdap.etl.batch.mapreduce

Class TransformRunner<KEY,VALUE>

java.lang.Object

co.cask.cdap.etl.batch.mapreduce.TransformRunner<KEY,VALUE>

Type Parameters:

KEY - the type of key to send into the transform executor

VALUE - the type of value to send into the transform executor

public class TransformRunner<KEY,VALUE>
extends Object

Initializes a TransformExecutor and runs transforms. This is used in both the mapper and reducer since they do mostly the same thing, except the mapper needs to write to an aggregator or to sinks, whereas the reducer needs to read from an aggregator and write to sinks.

Constructor Summary

Constructors

Constructor and Description
TransformRunner(MapReduceTaskContext<Object,Object> context, Metrics metrics)

Method Summary

Methods

Modifier and Type	Method and Description
void	destroy()
void	transform(KEY key, VALUE value)

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformRunner

public TransformRunner(MapReduceTaskContext<Object,Object> context,
               Metrics metrics)
                throws Exception

Throws:

Exception

Method Detail

transform

public void transform(KEY key,
             VALUE value)
               throws Exception

Throws:

Exception

destroy

public void destroy()