DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper (io.druid:druid 0.12.0 API)

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

DeterminePartitionsDimSelectionPostGroupByMapper()

Constructors
Constructor and Description
`DeterminePartitionsDimSelectionPostGroupByMapper()`

Method Summary

All Methods Instance Methods Concrete 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
  - DeterminePartitionsDimSelectionPostGroupByMapper
```
public 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

Class DeterminePartitionsJob.DeterminePartitionsDimSelectionPostGroupByMapper

Nested Class Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

DeterminePartitionsDimSelectionPostGroupByMapper

Method Detail

setup

map