All Known Implementing Classes:

DefaultBatchJobRecoveryHandler, DummyBatchJobRecoveryHandler
```
public interface BatchJobRecoveryHandler
```
Interface for handling batch job recovery.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`initialize(BatchJobRecoveryContext batchJobRecoveryContext)`	Initializes the recovery handler with the batch job recovery context.
`boolean`	`isRecovering()`	Determines whether the job is recovering.
`boolean`	`needRecover()`	Determines whether the job needs to undergo recovery.
`void`	`onExecutionFinished(ExecutionVertexID executionVertexId)`	Records the execution vertex finished event for use during future batch job recovery.
`void`	`onExecutionJobVertexInitialization(JobVertexID jobVertexId, int parallelism, Map<IntermediateDataSetID,JobVertexInputInfo> jobVertexInputInfos)`	Records the job vertex initialization event for use during future batch job recovery.
`void`	`onExecutionVertexReset(Collection<ExecutionVertexID> vertices)`	Handles the reset event for a collection of execution vertices and records the event for use during future batch job recovery.
`void`	`startRecovering()`	Starts the recovery process.
`void`	`stop(boolean cleanUp)`	Stops the job recovery handler and optionally clean up.

- Method Detail
  - initialize
```
void initialize(BatchJobRecoveryContext batchJobRecoveryContext)
```
    Initializes the recovery handler with the batch job recovery context.
  - startRecovering
```
void startRecovering()
```
    Starts the recovery process.
  - stop
```
void stop(boolean cleanUp)
```
    Stops the job recovery handler and optionally clean up.
    
    Parameters:
    
    cleanUp - whether to clean up.
  - needRecover
```
boolean needRecover()
```
    Determines whether the job needs to undergo recovery.
  - isRecovering
```
boolean isRecovering()
```
    Determines whether the job is recovering.
  - onExecutionVertexReset
```
void onExecutionVertexReset(Collection<ExecutionVertexID> vertices)
```
    Handles the reset event for a collection of execution vertices and records the event for use during future batch job recovery.
    
    Parameters:
    
    vertices - a collection of execution vertex IDs that have been reset.
  - onExecutionJobVertexInitialization
```
void onExecutionJobVertexInitialization(JobVertexID jobVertexId,
                                        int parallelism,
                                        Map<IntermediateDataSetID,JobVertexInputInfo> jobVertexInputInfos)
```
    Records the job vertex initialization event for use during future batch job recovery.
    
    Parameters:
    
    jobVertexId - the id of the job vertex being initialized.
    
    parallelism - the parallelism of the job vertex.
    
    jobVertexInputInfos - a map of intermediate dataset IDs to job vertex input info.
  - onExecutionFinished
```
void onExecutionFinished(ExecutionVertexID executionVertexId)
```
    Records the execution vertex finished event for use during future batch job recovery.
    
    Parameters:
    
    executionVertexId - the id of the execution vertex is finished.

Interface BatchJobRecoveryHandler

Method Summary

Method Detail

initialize

startRecovering

stop

needRecover

isRecovering

onExecutionVertexReset

onExecutionJobVertexInitialization

onExecutionFinished