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https://issues.apache.org/jira/browse/FLINK-20433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17245767#comment-17245767
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Arvid Heise commented on FLINK-20433:
-------------------------------------
This ^ is actually a very rare issue that may actually be caused by a
production issue.
There is a more frequently appearing issue, where an unexpected failure
actually drops the input splits and hence the test never finishes regularly
(time out eventually kicks in).
> UnalignedCheckpointTestBase.execute failed with "TestTimedOutException: test
> timed out after 300 seconds"
> ---------------------------------------------------------------------------------------------------------
>
> Key: FLINK-20433
> URL: https://issues.apache.org/jira/browse/FLINK-20433
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.12.0, 1.13.0
> Reporter: Dian Fu
> Assignee: Arvid Heise
> Priority: Critical
> Labels: test-stability
> Fix For: 1.13.0
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=10353&view=logs&j=39d5b1d5-3b41-54dc-6458-1e2ddd1cdcf3&t=a99e99c7-21cd-5a1f-7274-585e62b72f56
> {code}
> 2020-12-01T01:33:37.8672135Z [ERROR] execute[Parallel cogroup, p =
> 10](org.apache.flink.test.checkpointing.UnalignedCheckpointITCase) Time
> elapsed: 300.308 s <<< ERROR!
> 2020-12-01T01:33:37.8672736Z org.junit.runners.model.TestTimedOutException:
> test timed out after 300 seconds
> 2020-12-01T01:33:37.8673110Z at sun.misc.Unsafe.park(Native Method)
> 2020-12-01T01:33:37.8673463Z at
> java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> 2020-12-01T01:33:37.8673951Z at
> java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1707)
> 2020-12-01T01:33:37.8674429Z at
> java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
> 2020-12-01T01:33:37.8686627Z at
> java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1742)
> 2020-12-01T01:33:37.8687167Z at
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908)
> 2020-12-01T01:33:37.8687859Z at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1842)
> 2020-12-01T01:33:37.8696554Z at
> org.apache.flink.streaming.api.environment.LocalStreamEnvironment.execute(LocalStreamEnvironment.java:70)
> 2020-12-01T01:33:37.8697226Z at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1822)
> 2020-12-01T01:33:37.8697885Z at
> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1804)
> 2020-12-01T01:33:37.8698514Z at
> org.apache.flink.test.checkpointing.UnalignedCheckpointTestBase.execute(UnalignedCheckpointTestBase.java:122)
> 2020-12-01T01:33:37.8699131Z at
> org.apache.flink.test.checkpointing.UnalignedCheckpointITCase.execute(UnalignedCheckpointITCase.java:159)
> {code}
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