org.apache.druid.indexer

Class DetermineHashedPartitionsJob

java.lang.Object

org.apache.druid.indexer.DetermineHashedPartitionsJob

All Implemented Interfaces:

Jobby

public class DetermineHashedPartitionsJob
extends Object
implements Jobby

Determines appropriate ShardSpecs for a job by determining approximate cardinality of data set using HyperLogLog

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DetermineHashedPartitionsJob.DetermineCardinalityMapper
static class	DetermineHashedPartitionsJob.DetermineCardinalityReducer
static class	DetermineHashedPartitionsJob.DetermineHashedPartitionsPartitioner

Constructor Summary

Constructors

Constructor and Description
DetermineHashedPartitionsJob(HadoopDruidIndexerConfig config)

Method Summary

Modifier and Type	Method and Description
String	getErrorMessage()
Map<String,Object>	getStats()
boolean	run()

Methods inherited from class java.lang.Object

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

Constructor Detail

DetermineHashedPartitionsJob

public DetermineHashedPartitionsJob(HadoopDruidIndexerConfig config)

Method Detail

run

public boolean run()

Specified by:

run in interface Jobby

getStats

public Map<String,Object> getStats()

Specified by:

getStats in interface Jobby

getErrorMessage

@Nullable
public String getErrorMessage()

Specified by:

getErrorMessage in interface Jobby