org.apache.flink.runtime.protocols

Interface AccumulatorProtocol

All Superinterfaces:

VersionedProtocol

All Known Implementing Classes:

JobManager

public interface AccumulatorProtocol
extends VersionedProtocol

The accumulator protocol is implemented by the job manager. TaskManagers can use it to send the collected accumulators and JobClients can use it to get the final accumulator results after the job ended.

Method Summary

Methods

Modifier and Type	Method and Description
AccumulatorEvent	getAccumulatorResults(JobID jobID) Get the final accumulator results.
void	reportAccumulatorResult(AccumulatorEvent accumulatorEvent) Report accumulators that were collected in a task.

Method Detail

reportAccumulatorResult

void reportAccumulatorResult(AccumulatorEvent accumulatorEvent)
                             throws IOException

Report accumulators that were collected in a task. Called by Task Manager, after the user code was executed but before the task status update is reported.

Throws:

IOException

getAccumulatorResults

AccumulatorEvent getAccumulatorResults(JobID jobID)
                                       throws IOException

Get the final accumulator results. Called by JobClient after the job ended.

Throws:

IOException