[jira] [Created] (FLINK-21587) FineGrainedSlotManagerTest.testNotificationAboutNotEnoughResources is unstable

[Shang Yuanchun (Jira)]

Robert Metzger created FLINK-21587:
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             Summary: FineGrainedSlotManagerTest.testNotificationAboutNotEnoughResources is unstable
                 Key: FLINK-21587
                 URL: https://issues.apache.org/jira/browse/FLINK-21587
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.13.0
            Reporter: Robert Metzger
             Fix For: 1.13.0


Happened in my WIP branch, but most likely unrelated to my change: https://dev.azure.com/rmetzger/Flink/_build/results?buildId=8925&view=logs&j=9dc1b5dc-bcfa-5f83-eaa7-0cb181ddc267&t=ab910030-93db-52a7-74a3-34a0addb481b

Also note that the error is reproducable locally with DEBUG log level, but not with INFO:
{code}
[ERROR] Tests run: 12, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 2.169 s <<< FAILURE! - in org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTest
[ERROR] testNotificationAboutNotEnoughResources(org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTest)  Time elapsed: 0.029 s  <<< FAILURE!
java.lang.AssertionError:

Expected: a collection with size <1>
     but: collection size was <0>
        at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
        at org.junit.Assert.assertThat(Assert.java:956)
        at org.junit.Assert.assertThat(Assert.java:923)
        at org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTest$9.lambda$new$5(FineGrainedSlotManagerTest.java:548)
        at org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTestBase$Context.runTest(FineGrainedSlotManagerTestBase.java:197)
        at org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTest$9.<init>(FineGrainedSlotManagerTest.java:521)
        at org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTest.testNotificationAboutNotEnoughResources(FineGrainedSlotManagerTest.java:507)
        at org.apache.flink.runtime.resourcemanager.slotmanager.FineGrainedSlotManagerTest.testNotificationAboutNotEnoughResources(FineGrainedSlotManagerTest.java:493)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
{code}




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