Hi Daren,

The behavior is consistent with the regular FlinkDeployment where the
cleanup will also cancel any running jobs. Are you intending to
recover jobs from another session cluster?

-Max

On Mon, Jul 17, 2023 at 4:48 PM Wong, Daren
<daren...@amazon.co.uk.invalid> wrote:
>
> Hi devs,
>
> I would like to enquire about the cleanup procedure upon FlinkSessionJob 
> deletion. Currently, FlinkSessionJobController would trigger a cleanup in the 
> SessionJobReconciler which in turn cancels the Flink Job.
>
> Link to code: 
> https://github.com/apache/flink-kubernetes-operator/blob/371a2e6bbb8008c8ffccfff8fc338fb39bda19e2/flink-kubernetes-operator/src/main/java/org/apache/flink/kubernetes/operator/reconciler/sessionjob/SessionJobReconciler.java#L110
>
> This make sense to me as we want to ensure the Flink Job is ended gracefully 
> when the FlinkSessionJob associated with it is deleted. Otherwise, the Flink 
> Job will be “leaked” in the Flink cluster without a FlinkSessionJob 
> associated to it for the Kubernetes Operator to control.
>
> That being said, I was wondering if we should consider for scenarios where 
> users may not want FlinkSessionJob deletion to create a side-effect such as 
> cancelJob? For example, the user just wants to simply delete the whole 
> namespace. One way of achieving this could be to put the job in SUSPENDED 
> state instead of cancelling the job.
>
> I am opening this discussion thread to get feedback and input on whether this 
> alternative cleanup procedure is worth considering and if anyone else see any 
> potential use case/benefits/downsides with it?
>
> Thank you very much.
>
> Regards,
> Daren

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