io.druid.indexer

Class DeterminePartitionsJob.DeterminePartitionsGroupByReducer

java.lang.Object

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

io.druid.indexer.DeterminePartitionsJob.DeterminePartitionsGroupByReducer

Enclosing class:

DeterminePartitionsJob

public static class DeterminePartitionsJob.DeterminePartitionsGroupByReducer
extends org.apache.hadoop.mapreduce.Reducer<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable>

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
DeterminePartitionsJob.DeterminePartitionsGroupByReducer()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	reduce(org.apache.hadoop.io.BytesWritable key, Iterable<org.apache.hadoop.io.NullWritable> 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

DeterminePartitionsJob.DeterminePartitionsGroupByReducer

public DeterminePartitionsJob.DeterminePartitionsGroupByReducer()

Method Detail

reduce

protected void reduce(org.apache.hadoop.io.BytesWritable key,
          Iterable<org.apache.hadoop.io.NullWritable> 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.NullWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable>

Throws:

IOException

InterruptedException