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https://issues.apache.org/jira/browse/FLINK-40804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18130126#comment-18130126
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Gunjan Aggarwal commented on FLINK-40804:
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Hey [~martijnvisser] , Can I get assigned to this issue.
> UnalignedCheckpointRescaleWithMixedExchangesITCase.testRescaleFromUnalignedCheckpoint
> fails with "Exceeded checkpoint tolerable failure threshold"
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-40804
> URL: https://issues.apache.org/jira/browse/FLINK-40804
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.20.6
> Reporter: Martijn Visser
> Priority: Major
>
> https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=79252&view=logs&j=a596f69e-60d2-5a4b-7d39-dc69e4cdaed3
> (release-1.20 nightly, 2026-09-19, test_cron_jdk17 tests)
> {code}
> [ERROR]
> org.apache.flink.test.checkpointing.UnalignedCheckpointRescaleWithMixedExchangesITCase.testRescaleFromUnalignedCheckpoint[Test
> case 3] -- Time elapsed: 633.5 s <<< ERROR!
> org.apache.flink.runtime.JobException: Recovery is suppressed by
> NoRestartBackoffTimeStrategy
> ...
> Caused by: org.apache.flink.util.FlinkRuntimeException: Exceeded checkpoint
> tolerable failure threshold. The latest checkpoint failed due to Checkpoint
> expired before completing., view the Checkpoint History tab or the Job
> Manager log to find out why continuous checkpoints failed.
> {code}
> The rescaled job restored from checkpoint 1, its source stayed in
> INITIALIZING for 26 seconds, checkpoints 2 to 6 were declined with "tasks not
> ready", and checkpoint 7 expired after the 10 minute timeout. The other four
> test cases passed in the same run.
> This is not the tempdir race from FLINK-40446, which was backported on
> 2026-09-16.
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