DetermineHashedPartitionsJob (druid-indexing-hadoop 28.0.1 API)

java.lang.Object
- org.apache.druid.indexer.DetermineHashedPartitionsJob

All Implemented Interfaces:

org.apache.druid.indexer.Jobby
```
public class DetermineHashedPartitionsJob
extends Object
implements org.apache.druid.indexer.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	Description
`static class`	`DetermineHashedPartitionsJob.DetermineCardinalityMapper`
`static class`	`DetermineHashedPartitionsJob.DetermineCardinalityReducer`
`static class`	`DetermineHashedPartitionsJob.DetermineHashedPartitionsPartitioner`

Constructor Summary

Constructors
Constructor Description

DetermineHashedPartitionsJob(HadoopDruidIndexerConfig config)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method 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 org.apache.druid.indexer.Jobby
  - getStats
```
public Map<String,Object> getStats()
```
    Specified by:
    
    getStats in interface org.apache.druid.indexer.Jobby
  - getErrorMessage
```
@Nullable
public String getErrorMessage()
```
    Specified by:
    
    getErrorMessage in interface org.apache.druid.indexer.Jobby