| パッケージ | 説明 | 
|---|---|
| org.apache.hadoop.mapred | |
| org.apache.hadoop.mapreduce | |
| org.apache.hadoop.mapreduce.counters | This package contains the implementations of different types of
 map-reduce counters. | 
| 修飾子とタイプ | クラスと説明 | 
|---|---|
| static class  | Counters.CounterA counter record, comprising its name and value. | 
| 修飾子とタイプ | メソッドと説明 | 
|---|---|
| Counter | Counters.Counter. getUnderlyingCounter() | 
| 修飾子とタイプ | メソッドと説明 | 
|---|---|
| Counter | TaskAttemptContext. getCounter(Enum<?> counterName)Get the  Counterfor the givencounterName. | 
| Counter | TaskAttemptContext. getCounter(String groupName,
          String counterName) | 
| 修飾子とタイプ | クラスと説明 | 
|---|---|
| class  | AbstractCounters<C extends Counter,G extends CounterGroupBase<C>>An abstract class to provide common implementation for the Counters
 container in both mapred and mapreduce packages. | 
| interface  | CounterGroupBase<T extends Counter>The common counter group interface. | 
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