Thomas Weise created FLINK-29109:
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Summary: Checkpoint path conflict with stateless upgrade mode
Key: FLINK-29109
URL: https://issues.apache.org/jira/browse/FLINK-29109
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Affects Versions: kubernetes-operator-1.1.0
Reporter: Thomas Weise
Assignee: Thomas Weise
A stateful job with stateless upgrade mode (yes, there are such use cases)
fails with checkpoint path conflict due to constant jobId and FLINK-19358
(applies to Flink < 1.16x). Since with stateless upgrade mode the checkpoint id
resets on restart the job is going to write to previously used locations and
fail. The workaround is to rotate the jobId on every redeploy when the upgrade
mode is stateless. While this can be worked around externally it is best done
in the operator itself because reconciliation resolves when a restart is
actually required while rotating jobId externally may trigger unnecessary
restarts.
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