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https://issues.apache.org/jira/browse/FLINK-40655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18118771#comment-18118771
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Martijn Visser commented on FLINK-40655:
----------------------------------------
Another occurrence, master nightly 2026-09-22, test_cron_azure core, JDK 17:
https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=79325&view=logs&j=77a9d8e1-d610-59b3-fc2a-4766541e0e33
{code}
[ERROR]
org.apache.flink.runtime.executiongraph.ExecutionVertexTest.testResetForNewExecutionReleasesPartitions
-- Time elapsed: 0.081 s <<< FAILURE!
java.lang.AssertionError:
Expecting
<CompletableFuture[Completed:
[4de9c1b26cdb9d54b99b8621e2080714#0@1852584ab370d616511d95ffe7dbf193_5cf49ae654ca92bb30b568733bafc14b_0_0]]>
not to be done.
at
org.apache.flink.runtime.executiongraph.ExecutionVertexTest.testResetForNewExecutionReleasesPartitions(ExecutionVertexTest.java:95)
{code}
Line 95 again, the assertion before markFinished().
> ExecutionVertexTest.testResetForNewExecutionReleasesPartitions is unstable
> --------------------------------------------------------------------------
>
> Key: FLINK-40655
> URL: https://issues.apache.org/jira/browse/FLINK-40655
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Coordination, Tests
> Affects Versions: 2.3.0, 2.2.1, 1.20.5, 2.4.0
> Reporter: Martijn Visser
> Priority: Major
> Labels: pull-request-available, test-stability
>
> {code}
> [ERROR]
> org.apache.flink.runtime.executiongraph.ExecutionVertexTest.testResetForNewExecutionReleasesPartitions
> -- Time elapsed: 0.070 s <<< FAILURE!
> java.lang.AssertionError:
> Expecting
> <CompletableFuture[Completed:
> [c7b11773d4337c893ef2d96dab905a8a#0@206983cc7f2453fa4bc230fce7b00509_50dd1e4e2f60188233f1f72f88eecc93_0_0]]>
> not to be done.
> {code}
> https://github.com/apache/flink/actions/runs/34732018337
> https://github.com/apache/flink/actions/runs/34775554131
> Both on 2026-09-13 on master in the core module, one nightly and one push run
> on a different commit.
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