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https://issues.apache.org/jira/browse/FLINK-40793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18118874#comment-18118874
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sepuri sai krishna commented on FLINK-40793:
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Draft PR: https://github.com/apache/flink/pull/29278
[~martijnvisser] this is the DefaultSchedulerTest case I mentioned on #29208.
Could you assign the ticket to me? I'll take the PR out of draft once you have
had a look.
> DefaultSchedulerTest is unstable across many test methods
> ---------------------------------------------------------
>
> Key: FLINK-40793
> URL: https://issues.apache.org/jira/browse/FLINK-40793
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination
> Affects Versions: 2.2.0, 2.3.0, 2.4.0
> Reporter: sepuri sai krishna
> Priority: Major
> Labels: pull-request-available, test-stability
>
> DefaultSchedulerTest failed 17 times in the 90 days to 2026-09-15, in 11
> different test methods, on all core CI profiles (Java 11, 17, 21, Hadoop,
> AdaptiveScheduler). It is not limited to master: the most recent two are
> 2026-09-14 on master and 2026-09-10 on release-2.3.
> Recent runs:
> * https://github.com/apache/flink/actions/runs/34798011374/job/103837976051
> master, testExceptionHistoryWithRestartableFailure
> * https://github.com/apache/flink/actions/runs/34427845031/job/102726173515
> release-2.3, testExceptionHistoryWithRestartableFailure
> * https://github.com/apache/flink/actions/runs/33866786819/job/101007980019
> testExceptionHistoryConcurrentRestart
> * https://github.com/apache/flink/actions/runs/33349433782/job/99360730245
> testJobStatusHookWithJobCanceled
> * https://github.com/apache/flink/actions/runs/32136151763/job/95710148170
> testExceptionHistoryWithGlobalFailOver
> * https://github.com/apache/flink/actions/runs/31662007213/job/94339220821
> testJobStatusHookWithJobFinished
> * https://github.com/apache/flink/actions/runs/30418270959/job/90470994165
> testStartCheckpointOnlyAfterVertexWithBlockingEdgeFinished
> Other failing methods: skipDeploymentIfVertexVersionOutdated,
> testDeploymentWaitForProducedPartitionRegistration,
> failGlobalWhenRestoringStateFails,
> jobStatusIsRestartingIfOneVertexIsWaitingForRestart,
> abortPendingCheckpointsWhenRestartingTasks.
> {code}
> [ERROR]
> org.apache.flink.runtime.scheduler.DefaultSchedulerTest.testJobStatusHookWithJobCanceled
> -- Time elapsed: 0.014 s <<< FAILURE!
> org.opentest4j.AssertionFailedError:
> expected: CANCELED
> but was: FAILED
> at
> org.apache.flink.runtime.scheduler.DefaultSchedulerTest.commonJobStatusHookTest(DefaultSchedulerTest.java:1933)
> at
> org.apache.flink.runtime.scheduler.DefaultSchedulerTest.testJobStatusHookWithJobCanceled(DefaultSchedulerTest.java:1818)
> {code}
> {code}
> [ERROR]
> org.apache.flink.runtime.scheduler.DefaultSchedulerTest.testStartCheckpointOnlyAfterVertexWithBlockingEdgeFinished
> -- Time elapsed: 0.026 s <<< ERROR!
> java.lang.IllegalStateException
> at
> org.apache.flink.util.Preconditions.checkState(Preconditions.java:177)
> at
> org.apache.flink.runtime.scheduler.DefaultSchedulerTest.transitionToRunning(DefaultSchedulerTest.java:2362)
> at
> org.apache.flink.runtime.scheduler.DefaultSchedulerTest.testStartCheckpointOnlyAfterVertexWithBlockingEdgeFinished(DefaultSchedulerTest.java:1877)
> {code}
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