| Interface | Description | 
|---|---|
| CounterGroup | 
 A group of  
TezCounters that logically belong together. | 
| CounterGroupBase<T extends TezCounter> | 
 The common counter group interface. 
 | 
| TezCounter | 
 A named counter that tracks the progress of a job. 
 | 
| Class | Description | 
|---|---|
| AbstractCounters<C extends TezCounter,G extends CounterGroupBase<C>> | 
 An abstract class to provide common implementation for the Counters
 container in both mapred and mapreduce packages. 
 | 
| TezCounters | 
Counters holds per job/task counters, defined either by the
 framework or applications. | 
| Enum | Description | 
|---|---|
| DAGCounter | 
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