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https://issues.apache.org/jira/browse/FLINK-39311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Piotr Nowojski closed FLINK-39311.
----------------------------------
Fix Version/s: 2.3.0
Resolution: Fixed
merged commit 4a5b178 into apache:master
> Flaky tests in DispatcherApplicationTest
> ----------------------------------------
>
> Key: FLINK-39311
> URL: https://issues.apache.org/jira/browse/FLINK-39311
> Project: Flink
> Issue Type: Bug
> Reporter: Yi Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.3.0
>
>
> Several tests in DispatcherApplicationTest are flaky, e.g.
> Error: 02:53:58 02:53:58.665 [ERROR] Errors:
> Error: 02:53:58 02:53:58.665 [ERROR]
> DispatcherApplicationTest.testApplicationStatusChange_ThrowsIfDuplicateTerminalStatus:212
> » Timeout
> The issue can be reproduced locally by running the test repeatedly until
> failure. The logs from failed runs contain error messages like:
> 9553 [ForkJoinPool.commonPool-worker-19] WARN
> org.apache.flink.runtime.rpc.MainThreadValidatorUtil [] - Violation of main
> thread constraint detected: expected <null> but running in
> <Thread[ForkJoinPool.commonPool-worker-19,5,main]>.
> java.lang.Exception: Violation of main thread constraint detected: expected
> <null> but running in <Thread[ForkJoinPool.commonPool-worker-19,5,main]>.
> at
> org.apache.flink.runtime.rpc.MainThreadValidatorUtil.isRunningInExpectedThread(MainThreadValidatorUtil.java:73)
> at
> org.apache.flink.runtime.rpc.RpcEndpoint.validateRunsInMainThread(RpcEndpoint.java:463)
> at
> org.apache.flink.runtime.rpc.RpcEndpoint$MainThreadExecutor.assertRunningInMainThread(RpcEndpoint.java:581)
> at
> org.apache.flink.runtime.dispatcher.cleanup.DefaultApplicationResourceCleaner.cleanupAsync(DefaultApplicationResourceCleaner.java:141)
> at
> org.apache.flink.runtime.dispatcher.Dispatcher.removeApplication(Dispatcher.java:1125)
> at
> org.apache.flink.runtime.dispatcher.Dispatcher.lambda$notifyApplicationStatusChange$12(Dispatcher.java:984)
> at
> java.base/java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:1072)
> at
> java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:479)
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