Thomas Weise created FLINK-30858:
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Summary: Kubernetes operator does not update reconciled generation
Key: FLINK-30858
URL: https://issues.apache.org/jira/browse/FLINK-30858
Project: Flink
Issue Type: Bug
Components: Kubernetes Operator
Affects Versions: kubernetes-operator-1.3.1
Reporter: Thomas Weise
Kubernetes manages the generation field as part of the spec metadata. It will
be increased when changes are made to the resource. The counterpart in status
is "observed generation", provided by a controller. By comparing the two, the
client can determine that the controller has processed the spec and in
conjunction with other status information conclude that a change has been
reconciled.
The Flink operator currently tracks the generation as part of reconciled and
stable specs but these cannot be used as "observed generation" to perform the
check. The value isn't updated in cases where operator determines that there
are no changes to the spec that require deployment. This can be reproduced
through PUT/replace with the same spec or a change in upgrade mode.
The operator should provide the observed spec, which in conjunction with
deployment state can then be used by clients to determine that the spec has
been reconciled.
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