Github user mjsax commented on a diff in the pull request:
https://github.com/apache/flink/pull/750#discussion_r46290465
--- Diff:
flink-runtime/src/test/java/org/apache/flink/runtime/jobmanager/JobManagerTest.java
---
@@ -227,4 +235,121 @@ public void testRequestPartitionState() throws
Exception {
}
}};
}
+
+ @Test
+ public void testStopSignal() throws Exception {
+ new JavaTestKit(system) {{
+ // Setup
+ TestingCluster cluster = null;
+
+ try {
+ cluster = startTestingCluster(2, 1,
DEFAULT_AKKA_ASK_TIMEOUT());
+
+ // Create a task
+ final JobVertex sender = new
JobVertex("Sender");
+ sender.setParallelism(2);
+
sender.setInvokableClass(StoppableInvokable.class);
+
+ final JobGraph jobGraph = new
JobGraph("Blocking test job", JobType.STREAMING, sender);
+ final JobID jid = jobGraph.getJobID();
+
+ final ActorGateway jobManagerGateway =
cluster.getLeaderGateway(TestingUtils.TESTING_DURATION());
+
+ // we can set the leader session ID to None
because we don't use this gateway to send messages
+ final ActorGateway testActorGateway = new
AkkaActorGateway(getTestActor(), null);
+
+ // Submit the job and wait for all vertices to
be running
+ jobManagerGateway.tell(
+ new SubmitJob(
+ jobGraph,
+
ListeningBehaviour.EXECUTION_RESULT),
+ testActorGateway);
+
expectMsgClass(JobManagerMessages.JobSubmitSuccess.class);
+
+ jobManagerGateway.tell(new StopJob(jid),
testActorGateway);
+
+ // - The test
----------------------------------------------------------------------
+ expectMsgClass(StoppingSuccess.class);
--- End diff --
This might end up in a race condition. STOP only sets a flag to the sources
that they should return from `run()` -- however, the job itself is still in
state `RUNNING` before this happens, thus it will not be removed from
`currentJobs` until the sources (actually the whole job) finished. If we check
too early this test fails. I would rather leave it as is -- otherwise, we
introduce an instability to this test. Let me know if you disagree.
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