Alexis Sarda-Espinosa created FLINK-30305:
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Summary: Operator deletes HA metadata during stateful upgrade,
preventing potential manual rollback
Key: FLINK-30305
URL: https://issues.apache.org/jira/browse/FLINK-30305
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Affects Versions: kubernetes-operator-1.2.0
Reporter: Alexis Sarda-Espinosa
I was testing resiliency of jobs with Kubernetes-based HA enabled, upgrade mode
= {{savepoint}}, and with _automatic_ rollback _disabled_ in the operator.
After the job was running, I purposely created an erroneous spec by changing my
pod template to include an entry in {{envFrom -> secretRef}} with a name that
doesn't exist. Schema validation passed, so the operator tried to upgrade the
job, and I see this in the logs:
{noformat}
>>> Status | Info | UPGRADING | The resource is being upgraded
Deleting deployment with terminated application before new deployment
Deleting JobManager deployment and HA metadata.
{noformat}
Afterwards, even if I remove the non-existing entry from my pod template, the
operator can no longer propagate the new spec because "Job is not running yet
and HA metadata is not available, waiting for upgradeable state".
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