Martijn Visser created FLINK-41247:
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Summary: 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
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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