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https://issues.apache.org/jira/browse/FLINK-22181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17318091#comment-17318091
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Stephan Ewen commented on FLINK-22181:
--------------------------------------
At this point, I would expect they all have a similar root cause.
Maybe even the same one I am currently working on in FLINK-21996
> SourceNAryInputChainingITCase hangs on azure
> --------------------------------------------
>
> Key: FLINK-22181
> URL: https://issues.apache.org/jira/browse/FLINK-22181
> Project: Flink
> Issue Type: Bug
> Components: API / DataStream
> Affects Versions: 1.13.0
> Reporter: Dawid Wysakowicz
> Priority: Major
> Labels: test-stability
> Fix For: 1.13.0
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=16277&view=logs&j=34f41360-6c0d-54d3-11a1-0292a2def1d9&t=2d56e022-1ace-542f-bf1a-b37dd63243f2&l=11607
> {code}
> 2021-04-09T11:37:50.3331246Z "main" #1 prio=5 os_prio=0
> tid=0x00007fae7000b800 nid=0x253e sleeping[0x00007fae76c65000]
> 2021-04-09T11:37:50.3331592Z java.lang.Thread.State: TIMED_WAITING
> (sleeping)
> 2021-04-09T11:37:50.3331883Z at java.lang.Thread.sleep(Native Method)
> 2021-04-09T11:37:50.3332313Z at
> org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.sleepBeforeRetry(CollectResultFetcher.java:229)
> 2021-04-09T11:37:50.3332976Z at
> org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.next(CollectResultFetcher.java:111)
> 2021-04-09T11:37:50.3333577Z at
> org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:106)
> 2021-04-09T11:37:50.3334166Z at
> org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:80)
> 2021-04-09T11:37:50.3334714Z at
> org.apache.flink.streaming.api.datastream.DataStreamUtils.collectBoundedStream(DataStreamUtils.java:106)
> 2021-04-09T11:37:50.3335356Z at
> org.apache.flink.test.streaming.runtime.SourceNAryInputChainingITCase.testMixedInputsWithMultipleUnionsExecution(SourceNAryInputChainingITCase.java:140)
> 2021-04-09T11:37:50.3335874Z at
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 2021-04-09T11:37:50.3336264Z at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 2021-04-09T11:37:50.3336730Z at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 2021-04-09T11:37:50.3337136Z at
> java.lang.reflect.Method.invoke(Method.java:498)
> 2021-04-09T11:37:50.3337590Z at
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
> 2021-04-09T11:37:50.3338064Z at
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 2021-04-09T11:37:50.3338517Z at
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
> 2021-04-09T11:37:50.3339139Z at
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 2021-04-09T11:37:50.3339575Z at
> org.apache.flink.util.TestNameProvider$1.evaluate(TestNameProvider.java:45)
> 2021-04-09T11:37:50.3339991Z at
> org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
> 2021-04-09T11:37:50.3340357Z at
> org.junit.rules.RunRules.evaluate(RunRules.java:20)
> 2021-04-09T11:37:50.3340709Z at
> org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
> 2021-04-09T11:37:50.3341134Z at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
> 2021-04-09T11:37:50.3341649Z at
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
> 2021-04-09T11:37:50.3342066Z at
> org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
> 2021-04-09T11:37:50.3342541Z at
> org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
> 2021-04-09T11:37:50.3342931Z at
> org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
> 2021-04-09T11:37:50.3343341Z at
> org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
> 2021-04-09T11:37:50.3343748Z at
> org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
> 2021-04-09T11:37:50.3344144Z at
> org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
> 2021-04-09T11:37:50.3344561Z at
> org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
> 2021-04-09T11:37:50.3344932Z at
> org.junit.rules.RunRules.evaluate(RunRules.java:20)
> 2021-04-09T11:37:50.3345295Z at
> org.junit.runners.ParentRunner.run(ParentRunner.java:363)
> 2021-04-09T11:37:50.3345710Z at
> org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
> 2021-04-09T11:37:50.3346177Z at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
> 2021-04-09T11:37:50.3346668Z at
> org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
> 2021-04-09T11:37:50.3347123Z at
> org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
> 2021-04-09T11:37:50.3347660Z at
> org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
> 2021-04-09T11:37:50.3348175Z at
> org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
> 2021-04-09T11:37:50.3348620Z at
> org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
> 2021-04-09T11:37:50.3349120Z at
> org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
> {code}
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