Martijn Visser created FLINK-40804:
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Summary:
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
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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