PutCombiner (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.mapreduce.Reducer<K,Put,K,Put>
- - org.apache.hadoop.hbase.mapreduce.PutCombiner<K>

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class PutCombiner<K>
extends org.apache.hadoop.mapreduce.Reducer<K,Put,K,Put>

Combine Puts. Merges Put instances grouped by K into a single instance.

See Also:: TableMapReduceUtil

- Nested Class Summary
  - Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Reducer
    org.apache.hadoop.mapreduce.Reducer.Context
- Field Summary
  
  Fields
  Modifier and Type Field and Description
  
  private static org.apache.commons.logging.Log LOG
- Constructor Summary
  
  Constructors
  Constructor and Description
  
  PutCombiner()
- Method Summary
  
  Methods
  Modifier and Type Method and Description
  
  protected void reduce(K row, Iterable<Put> vals, org.apache.hadoop.mapreduce.Reducer.Context context)
  - Methods inherited from class org.apache.hadoop.mapreduce.Reducer
    cleanup, run, setup
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Fields
Modifier and Type	Field and Description
`private static org.apache.commons.logging.Log`	`LOG`

Constructors
Constructor and Description
`PutCombiner()`

Methods
Modifier and Type	Method and Description
`protected void`	`reduce(K row, Iterable<Put> vals, org.apache.hadoop.mapreduce.Reducer.Context context)`

Field Detail

LOG

private static final org.apache.commons.logging.Log LOG

Constructor Detail
- PutCombiner
```
public PutCombiner()
```

Method Detail

reduce

protected void reduce(K row,
          Iterable<Put> vals,
          org.apache.hadoop.mapreduce.Reducer.Context context)
               throws IOException,
                      InterruptedException

Overrides:: reduce in class org.apache.hadoop.mapreduce.Reducer<K,Put,K,Put>
Throws:: IOException; InterruptedException

Class PutCombiner<K>

Nested Class Summary

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

Field Summary

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

LOG

Constructor Detail

PutCombiner

Method Detail

reduce