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https://issues.apache.org/jira/browse/FLINK-31669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17706775#comment-17706775
 ] 

Matthias Pohl commented on FLINK-31669:
---------------------------------------

Based on the thread dump it appears that {[MemoryExecutionGraphInfoStore}}'s 
shutdown hook is called:
{code}
"MemoryExecutionGraphInfoStore shutdown hook" Id=54 BLOCKED on [I@e2dfcf owned 
by "MemoryExecutionGraphInfoStore shutdown hook" Id=171
        at 
org.apache.flink.shaded.guava30.com.google.common.cache.LocalCache$Segment.clear(LocalCache.java:3198)
        -  blocked on [I@e2dfcf
        at 
org.apache.flink.shaded.guava30.com.google.common.cache.LocalCache.clear(LocalCache.java:4281)
        at 
org.apache.flink.shaded.guava30.com.google.common.cache.LocalCache$LocalManualCache.invalidateAll(LocalCache.java:4897)
        at 
org.apache.flink.runtime.dispatcher.MemoryExecutionGraphInfoStore.close(MemoryExecutionGraphInfoStore.java:151)
        at 
org.apache.flink.util.ShutdownHookUtil.lambda$addShutdownHook$0(ShutdownHookUtil.java:39)
        at 
org.apache.flink.util.ShutdownHookUtil$$Lambda$2127/2097505549.run(Unknown 
Source)
        at java.lang.Thread.run(Thread.java:748)

        Number of locked synchronizers = 1
        - java.util.concurrent.locks.ReentrantLock$NonfairSync@17ebd791
{code} 

> DynamicFilteringITCase failed fataly because of NoClassDefFoundError of 
> akka/actor/SuppressedDeadLetter
> -------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-31669
>                 URL: https://issues.apache.org/jira/browse/FLINK-31669
>             Project: Flink
>          Issue Type: Bug
>          Components: Runtime / Coordination
>    Affects Versions: 1.16.1
>            Reporter: Matthias Pohl
>            Priority: Critical
>              Labels: test-stability
>         Attachments: mvn.FLINK-31669.log
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=47692&view=logs&j=a9db68b9-a7e0-54b6-0f98-010e0aff39e2&t=cdd32e0b-6047-565b-c58f-14054472f1be&l=13752
> {code}
> [...]
> Mar 30 06:02:56 [ERROR] Error occurred in starting fork, check output in log
> Mar 30 06:02:56 [ERROR] Process Exit Code: 239
> Mar 30 06:02:56 [ERROR] Crashed tests:
> Mar 30 06:02:56 [ERROR] 
> org.apache.flink.table.planner.runtime.batch.sql.DynamicFilteringITCase
> Mar 30 06:02:56 [ERROR] at 
> org.apache.maven.plugin.surefire.booterclient.ForkStarter.fork(ForkStarter.java:748)
> [...]
> {code}



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