[jira] [Reopened] (FLINK-38506) SideOutputITCase.testWatermarkForwarding failed in test_cron_adaptive_scheduler tests

["Martijn Visser (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-38506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Martijn Visser reopened FLINK-38506:
------------------------------------

Re-opening for release-2.2. b63bae82e33a0b6db2e270294d6ef1d2f73a66b5 only went to master and release-2.3, and release-2.2 fails the same way:

release-2.2, push 2026-09-24 (Java 17, module tests): https://github.com/apache/flink/actions/runs/35976519966/job/107577404760

{code}
[ERROR] org.apache.flink.test.streaming.runtime.SideOutputITCase.testWatermarkForwarding -- Time elapsed: 0.195 s <<< ERROR!
org.apache.flink.runtime.client.JobExecutionException: Job execution failed.
...
Caused by: org.apache.flink.util.FlinkException: An OperatorEvent from an OperatorCoordinator to a task was lost. Triggering task failover to ensure consistency. Event: '[NoMoreSplitEvent]', targetTask: Source: timestamped-source (1/1) - execution #0
Caused by: org.apache.flink.runtime.operators.coordination.TaskNotRunningException: Task is not running, but in state FINISHED
{code}

We should backport b63bae82e33a0b6db2e270294d6ef1d2f73a66b5.

> SideOutputITCase.testWatermarkForwarding failed in test_cron_adaptive_scheduler tests
> -------------------------------------------------------------------------------------
>
>                 Key: FLINK-38506
>                 URL: https://issues.apache.org/jira/browse/FLINK-38506
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 2.2.0
>            Reporter: Ruan Hang
>            Assignee: Roman Khachatryan
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.3.0
>
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=70186&view=logs&j=8fd9202e-fd17-5b26-353c-ac1ff76c8f28



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