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https://issues.apache.org/jira/browse/FLINK-41247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18133401#comment-18133401
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Purushottam Sinha edited comment on FLINK-41247 at 10/28/26, 5:40 AM:
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[~martijnvisser] This appear to be a bug upstream
[https://github.com/netty/netty/issues/17897] which has a open PR right now.
Though there is a caveat of the upstream fix, we might need update in shaded
and its release. Post which main would work. As we wont normally update the
shaded version for released (by then) 2.4, so it would keep failing as per my
understanding.
I have a fix we can do in flink for now which will fix it for the time being.
Should I open a PR with the fix and link this issue.
was (Author: JIRAUSER310845):
[~martijnvisser] This appear to be a bug upstream
[https://github.com/netty/netty/issues/17897] which has a open PR right now. I
have a fix we can do in flink for now which will fix it for the time being.
Should I open a PR with the fix and link this issue as TODO for clean up or
wait for the fix upstream (I would keep track).
> AbstractServerTest.testPortRangeSuccess sees an open server connection after
> the servers are closed
> ---------------------------------------------------------------------------------------------------
>
> Key: FLINK-41247
> URL: https://issues.apache.org/jira/browse/FLINK-41247
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Queryable State
> Affects Versions: 2.4.0
> Reporter: Martijn Visser
> Priority: Major
> Labels: test-stability
>
> AbstractServerTest.testPortRangeSuccess failed on the release-2.4 nightly of
> 2026-10-26 (AdaptiveScheduler profile, JDK 17, module core):
> https://github.com/apache/flink/actions/runs/40257526813/job/121366293767
> {code}
> [ERROR]
> org.apache.flink.queryablestate.network.AbstractServerTest.testPortRangeSuccess
> -- Time elapsed: 0.712 s <<< FAILURE!
> org.opentest4j.AssertionFailedError:
> expected: 0L
> but was: 1L
> at
> org.apache.flink.queryablestate.network.AbstractServerTest.testPortRangeSuccess(AbstractServerTest.java:134)
> {code}
> Line 134 checks that the second server has no connections left after both
> servers and the client are closed; the same check for the first server
> passed. FLINK-14185 fixed the same assertion failure in 2019, when both
> servers shared one stats object, and moved this check out of the server's
> close method.
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