Package org.apache.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>

org.apache.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	Description
DeterminePartitionsGroupByReducer()

Method Summary

Modifier and Type	Method	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

DeterminePartitionsGroupByReducer

public 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