James Kan created FLINK-38867:
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Summary: FlinkBlueGreenDeployment: savepointRedeployNonce does not
respect user-provided initialSavepointPath
Key: FLINK-38867
URL: https://issues.apache.org/jira/browse/FLINK-38867
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Reporter: James Kan
h4. Description
The FlinkBlueGreenDeployment controller does not properly honor the
[`savepointRedeployNonce`|https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-main/docs/custom-resource/job-management/#redeploy-using-the-savepointredeploynonce]
parameter during subsequent deployments. When the nonce is incremented, the
controller ignores the user-specified `initialSavepointPath` and instead uses
the savepoint from the previous deployment (blue or green) being terminated.
h4. Expected Behavior
When `savepointRedeployNonce` is incremented in the FlinkBlueGreenDeployment
spec, the controller should respect the user-specified `initialSavepointPath`
and ensure the new active deployment (blue or green being transitioned to)
starts from the specified savepoint location.
h4. Current Behavior
- Initial deployments: `initialSavepointPath` is correctly applied ✓
- Subsequent deployments for FlinkBlueGreenDeployments: `initialSavepointPath`
is ignored when `savepointRedeployNonce` is updated ✗.
h4. Impact
This prevents manual savepoint selection functionality required for manual
recoveries and creates inconsistencies with the expected behaviour of
savepointRedeployNonce described in the Flink documentation.
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