Github user mxm commented on a diff in the pull request: https://github.com/apache/flink/pull/925#discussion_r35080374 --- Diff: flink-runtime/src/main/scala/org/apache/flink/runtime/jobmanager/JobManager.scala --- @@ -400,20 +400,16 @@ class JobManager( import scala.collection.JavaConverters._ sender ! RegisteredTaskManagers(instanceManager.getAllRegisteredInstances.asScala) - case Heartbeat(instanceID, metricsReport, accumulators) => + case Heartbeat(instanceID, metricsReport, accumulators, asyncAccumulatorUpdate) => log.debug(s"Received hearbeat message from $instanceID.") - Future { - accumulators foreach { - case accumulators => - currentJobs.get(accumulators.getJobID) match { - case Some((jobGraph, jobInfo)) => - jobGraph.updateAccumulators(accumulators) - case None => - // ignore accumulator values for old job - } - } - }(context.dispatcher) + if (asyncAccumulatorUpdate) { --- End diff -- Thanks, I was looking for a way to make the future synchronous for my test setup. I will look into `CallingThreadDispatcher`. I'm already overwriting this message in `TestingJobManager` but then I would have to insert duplicate code there :)
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