io.druid.indexer

Class DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text>

io.druid.indexer.DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper

Enclosing class:

DeterminePartitionsJob

public static class DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text>

This DimSelection mapper runs on data generated by our GroupBy job.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.BytesWritable key, org.apache.hadoop.io.NullWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
protected void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper

public DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
              throws IOException,
                     InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException

map

protected void map(org.apache.hadoop.io.BytesWritable key,
       org.apache.hadoop.io.NullWritable value,
       org.apache.hadoop.mapreduce.Mapper.Context context)
            throws IOException,
                   InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.NullWritable,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text>

Throws:

IOException

InterruptedException