Mate Czagany created FLINK-36037:
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Summary: Add compability for 1.9 last savepoint info on
upgrade/recovery
Key: FLINK-36037
URL: https://issues.apache.org/jira/browse/FLINK-36037
Project: Flink
Issue Type: Sub-task
Components: Kubernetes Operator
Reporter: Mate Czagany
With FLINK-35265, a new field in JobStatus was introduced called
`upgradeSnapshotReference`. This works for new jobs submitted to the operator,
but jobs that were submitted to versions before this commit will not be able to
upgrade because it used to use `status.jobStatus.savepointInfo.lastSavepoint`
field.
The operator should be able to fallback to the old field if found to ensure a
smooth upgrade process for Flink jobs when upgrading to the new operator
version.
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