Package org.apache.druid.indexer

Class HadoopDruidIndexerMapper<KEYOUT,VALUEOUT>

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<Object,Object,KEYOUT,VALUEOUT>

org.apache.druid.indexer.HadoopDruidIndexerMapper<KEYOUT,VALUEOUT>

Direct Known Subclasses:

DetermineHashedPartitionsJob.DetermineCardinalityMapper, DeterminePartitionsJob.DeterminePartitionsDimSelectionAssumeGroupedMapper, DeterminePartitionsJob.DeterminePartitionsGroupByMapper, IndexGeneratorJob.IndexGeneratorMapper

public abstract class HadoopDruidIndexerMapper<KEYOUT,VALUEOUT>
extends org.apache.hadoop.mapreduce.Mapper<Object,Object,KEYOUT,VALUEOUT>

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Field Summary

Fields

Modifier and Type	Field	Description
protected HadoopDruidIndexerConfig	config
protected org.apache.druid.segment.indexing.granularity.GranularitySpec	granularitySpec

Constructor Summary

Constructors

Constructor	Description
HadoopDruidIndexerMapper()

Method Summary

Modifier and Type	Method	Description
HadoopDruidIndexerConfig	getConfig()
protected abstract void	innerMap(org.apache.druid.data.input.InputRow inputRow, org.apache.hadoop.mapreduce.Mapper.Context context)
protected void	map(Object key, Object 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

Field Detail

config

protected HadoopDruidIndexerConfig config

granularitySpec

protected org.apache.druid.segment.indexing.granularity.GranularitySpec granularitySpec

Constructor Detail

HadoopDruidIndexerMapper

public HadoopDruidIndexerMapper()

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<Object,Object,KEYOUT,VALUEOUT>

Throws:

IOException

InterruptedException

getConfig

public HadoopDruidIndexerConfig getConfig()

map

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

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<Object,Object,KEYOUT,VALUEOUT>

Throws:

IOException

InterruptedException

innerMap

protected abstract void innerMap(org.apache.druid.data.input.InputRow inputRow,
                                 org.apache.hadoop.mapreduce.Mapper.Context context)
                          throws IOException,
                                 InterruptedException

Throws:

IOException

InterruptedException