Github user mjsax commented on a diff in the pull request: https://github.com/apache/flink/pull/750#discussion_r46308707 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/executiongraph/ExecutionGraph.java --- @@ -732,6 +758,18 @@ else if (current == JobStatus.RESTARTING) { } } + public void stop() { + if(jobType == JobType.STREAMING) { + for(ExecutionVertex ev : this.getAllExecutionVertices()) { + if(ev.getNumberOfInputs() == 0) { // send signal to sources only + ev.stop(); + } + } + } else { + throw new RuntimeException("STOP is only supported by streaming jobs."); --- End diff -- This is not a problem: in `JobManager.scala` a potential `Throwable` is caught when `ExecutionGraph.stop()` is called and a prober `StoppingFailure` message is sent back as response. I tested this in local mode. The job manager did not go down. Or is there any other place in the code in which this could become a problem? As alternative, we could introduce a regular exception (ie, `StoppingException`) and add a `throws` clause to `stop()`. What do you think about this?
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