StateMetric (Nemo Project 0.4 API)

Type Parameters:

T - class of state of the metric.

All Superinterfaces:

Metric

All Known Implementing Classes:

JobMetric, StageMetric, TaskMetric
```
public interface StateMetric<T extends java.io.Serializable>
extends Metric
```
Interface for metric which contians its state.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addEvent(T prevState, T newState)`	Add a `StateTransitionEvent` to the metric.
`java.util.List<StateTransitionEvent<T>>`	`getStateTransitionEvents()`	Get its list of `StateTransitionEvent`.

Methods inherited from interface org.apache.nemo.runtime.common.metric.Metric
getId, processMetricMessage

- Method Detail
  - getStateTransitionEvents
```
java.util.List<StateTransitionEvent<T>> getStateTransitionEvents()
```
    Get its list of StateTransitionEvent.
    
    Returns:
    
    list of events.
  - addEvent
```
void addEvent(T prevState,
              T newState)
```
    Add a StateTransitionEvent to the metric.
    
    Parameters:
    
    prevState - previous state.
    
    newState - new state.