JobEventManager (Flink : Runtime 2.1.0 API)

java.lang.Object
- org.apache.flink.runtime.jobmaster.event.JobEventManager

```
public class JobEventManager
extends Object
```
The manager for recording and replaying JobEvent.

Constructor Summary

Constructors
Constructor Description

JobEventManager(JobEventStore store)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`hasJobEvents()`	Returns whether the store is empty.
`boolean`	`replay(JobEventReplayHandler replayHandler)`	Replay all job events that have been record.
`void`	`start()`	Start the job event manager.
`void`	`stop(boolean clear)`	Stop the job event manager.
`void`	`writeEvent(JobEvent event, boolean cutBlock)`	Write a job event asynchronously.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - JobEventManager
```
public JobEventManager(JobEventStore store)
```
- Method Detail
  - start
```
public void start()
           throws Exception
```
    Start the job event manager.
    
    Throws:
    
    Exception
  - stop
```
public void stop(boolean clear)
```
    Stop the job event manager.
    NOTE: This method maybe invoked multiply times.
  - writeEvent
```
public void writeEvent(JobEvent event,
                       boolean cutBlock)
```
    Write a job event asynchronously.
    
    Parameters:
    
    event - The job event that will be recorded.
    
    cutBlock - whether start a new event block after write this event.
  - replay
```
public boolean replay(JobEventReplayHandler replayHandler)
```
    Replay all job events that have been record.
    
    Parameters:
    
    replayHandler - handler which will process the job event.
    
    Returns:
    
    true if replay successfully, false otherwise.
  - hasJobEvents
```
public boolean hasJobEvents()
                     throws Exception
```
    Returns whether the store is empty.
    
    Returns:
    
    false if the store contains any job events, true otherwise.
    
    Throws:
    
    Exception