Matyas Orhidi created FLINK-36640:
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Summary: Provide an easy way to reset autoscaling
Key: FLINK-36640
URL: https://issues.apache.org/jira/browse/FLINK-36640
Project: Flink
Issue Type: Improvement
Components: Kubernetes Operator
Reporter: Matyas Orhidi
[FLINK-32589|https://issues.apache.org/jira/browse/FLINK-32589] introduced a
feature to carry over parallelism overrides between application upgrades. This
serves pretty well on the happy path preventing users from clearing the actual
parallelism settings on regular updates. However in certain scenarios users may
want to reset the parallelism to an initial or desired state to force the
application out of an unwanted state. Such unwanted state can be a too large
parallelism that causes throttling, or similar. The current workaround needs to
upgrade steps by setting `job.autoscaler.enabled: false` and then
`job.autoscaler.enabled: true` again. We could combine it with a
`autoscalerReset` nonce. We could also reintroduce the config with manual
vertex parallelism settings to be able to reset to a configurable state,
similar to what we do to start a job from specific kafkaesque offsets.
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