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https://issues.apache.org/jira/browse/FLINK-17566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17102365#comment-17102365
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Canbin Zheng commented on FLINK-17566:
--------------------------------------

Not exactly. Version 4.5.2 doesn't send one API request when deleting a 
Deployment since it introduces the so-called {{Reaper}} which I think is for 
the old Kubernetes version. You can refer to class of 
{{DeploymentOperationsImpl}} at v4.5.2.

And I find a new PR for removing the Reaper which is what we need: 
https://github.com/fabric8io/kubernetes-client/blob/master/kubernetes-client/src/main/java/io/fabric8/kubernetes/client/dsl/internal/apps/v1/DeploymentOperationsImpl.java

So we should bump the fabric8 version then check if the problem still exists.


> Fix potential K8s resources leak after JobManager finishes in Applicaion mode
> -----------------------------------------------------------------------------
>
>                 Key: FLINK-17566
>                 URL: https://issues.apache.org/jira/browse/FLINK-17566
>             Project: Flink
>          Issue Type: Bug
>          Components: Deployment / Kubernetes
>            Reporter: Canbin Zheng
>            Priority: Major
>
> FLINK-10934 introduces applicaion mode support in the native K8s setups., but 
> as the discussion in 
> [https://github.com/apache/flink/pull/12003|https://github.com/apache/flink/pull/12003,],
>  there's large probability that all the K8s resources leak after the 
> JobManager finishes except that the replica of Deployment is scaled down to 
> 0. We need to find out the root cause and fix it.
> This may be related to the way fabric8 SDK deletes a Deployment. It splits 
> the procedure into three steps as follows:
>  # Scales down the replica to 0
>  # Wait until the scaling down succeed
>  # Delete the ReplicaSet
>  
>  



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