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https://issues.apache.org/jira/browse/FLINK-32751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Matthias Pohl resolved FLINK-32751.
-----------------------------------
    Fix Version/s: 1.18.0
                   1.16.3
                   1.17.2
                   1.19.0
       Resolution: Fixed

master (1.19):
* 5b8c4a74521410ca0391d63614c7a7da0b7f365d (actual fix)
* d343a0bc79b0c85c845d0011d29404567f28dd0a (improved testability)
1.18:
* 750311755b55ea2abf3313798453dcfefc36675a (actual fix)
* 848183c6dcd16c0c6a9766a2a4ea64c4a923040e (improved testability)
1.17:
* b6e4cc58adceb2de78d6cad0a794a3e24b43f896 (actual fix)
* abb5d7583232d72375019fb673334e72890f84e0 (improved testability)
1.16:
* 68af78571df6d4f0512bc2dda8b84f80f09adc3c (actual fix)
* ebcd8654f75d1eaabe139cc5779b670737d1bbe7 (improved testability)

> DistinctAggregateITCaseBase.testMultiDistinctAggOnDifferentColumn got stuck 
> on AZP
> ----------------------------------------------------------------------------------
>
>                 Key: FLINK-32751
>                 URL: https://issues.apache.org/jira/browse/FLINK-32751
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / API
>    Affects Versions: 1.18.0, 1.16.3, 1.17.2, 1.19.0
>            Reporter: Sergey Nuyanzin
>            Assignee: Matthias Pohl
>            Priority: Blocker
>              Labels: pull-request-available, test-stability
>             Fix For: 1.18.0, 1.16.3, 1.17.2, 1.19.0
>
>
> This build hangs 
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=51955&view=logs&j=ce3801ad-3bd5-5f06-d165-34d37e757d90&t=5e4d9387-1dcc-5885-a901-90469b7e6d2f&l=14399
> {noformat}
> Aug 04 03:03:47 "ForkJoinPool-1-worker-51" #28 daemon prio=5 os_prio=0 
> cpu=49342.66ms elapsed=3079.49s tid=0x00007f67ccdd0000 nid=0x5234 waiting on 
> condition  [0x00007f6791a19000]
> Aug 04 03:03:47    java.lang.Thread.State: WAITING (parking)
> Aug 04 03:03:47       at 
> jdk.internal.misc.Unsafe.park([email protected]/Native Method)
> Aug 04 03:03:47       - parking to wait for  <0x00000000ad3b1fb8> (a 
> java.util.concurrent.CompletableFuture$Signaller)
> Aug 04 03:03:47       at 
> java.util.concurrent.locks.LockSupport.park([email protected]/LockSupport.java:194)
> Aug 04 03:03:47       at 
> java.util.concurrent.CompletableFuture$Signaller.block([email protected]/CompletableFuture.java:1796)
> Aug 04 03:03:47       at 
> java.util.concurrent.ForkJoinPool.managedBlock([email protected]/ForkJoinPool.java:3118)
> Aug 04 03:03:47       at 
> java.util.concurrent.CompletableFuture.waitingGet([email protected]/CompletableFuture.java:1823)
> Aug 04 03:03:47       at 
> java.util.concurrent.CompletableFuture.get([email protected]/CompletableFuture.java:1998)
> Aug 04 03:03:47       at 
> org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.sendRequest(CollectResultFetcher.java:171)
> Aug 04 03:03:47       at 
> org.apache.flink.streaming.api.operators.collect.CollectResultFetcher.next(CollectResultFetcher.java:129)
> Aug 04 03:03:47       at 
> org.apache.flink.streaming.api.operators.collect.CollectResultIterator.nextResultFromFetcher(CollectResultIterator.java:106)
> Aug 04 03:03:47       at 
> org.apache.flink.streaming.api.operators.collect.CollectResultIterator.hasNext(CollectResultIterator.java:80)
> Aug 04 03:03:47       at 
> org.apache.flink.table.planner.connectors.CollectDynamicSink$CloseableRowIteratorWrapper.hasNext(CollectDynamicSink.java:222)
> Aug 04 03:03:47       at 
> java.util.Iterator.forEachRemaining([email protected]/Iterator.java:132)
> Aug 04 03:03:47       at 
> org.apache.flink.util.CollectionUtil.iteratorToList(CollectionUtil.java:122)
> Aug 04 03:03:47       at 
> org.apache.flink.table.planner.runtime.utils.BatchTestBase.executeQuery(BatchTestBase.scala:309)
> Aug 04 03:03:47       at 
> org.apache.flink.table.planner.runtime.utils.BatchTestBase.check(BatchTestBase.scala:145)
> Aug 04 03:03:47       at 
> org.apache.flink.table.planner.runtime.utils.BatchTestBase.checkResult(BatchTestBase.scala:109)
> Aug 04 03:03:47       at 
> org.apache.flink.table.planner.runtime.batch.sql.agg.DistinctAggregateITCaseBase.testMultiDistinctAggOnDifferentColumn(DistinctAggregateITCaseBase.scala:97)
> ~~
> {noformat}
> it is very likely that it is an old issue
> the similar case was mentioned for 1.11.0 and closed because of lack of 
> occurrences 
> FLINK-16923
> and another similar one FLINK-22100 which was marked as a duplicate of 
> FLINK-21996



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