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https://issues.apache.org/jira/browse/FLINK-26370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17501126#comment-17501126
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Yang Wang commented on FLINK-26370:
-----------------------------------

I am thinking do we really need to get the job status for every reconciliation. 
[~gyfora] Do you have any concerns if we have a background-updated job status 
cache?

 

I ask this question again because manual savepoint is in a similar situation[1] 
and users are hard to configure the thread pool size.

[1]. 
https://github.com/apache/flink-kubernetes-operator/pull/38#pullrequestreview-899750005

> Make Flink cluster communication asynchronous
> ---------------------------------------------
>
>                 Key: FLINK-26370
>                 URL: https://issues.apache.org/jira/browse/FLINK-26370
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Kubernetes Operator
>            Reporter: Gyula Fora
>            Assignee: Sandor Kelemen
>            Priority: Major
>
> In the current architecture calls to the flink clusters (through the rest 
> client) are made synchronously from the reconcile loop. 
> These calls often take a long time due to various (compeltely normal) reasons:
>  - Cluster is not ready -> long call + timeoutexception
>  - Operation takes a long time -> cancel/savepoint operations are often 
> expected to take seconds/minutes
> Both the observer and reconciler components make these calls.
> We should come up with a way to avoid making these sync calls from the main 
> loop while still preserving the logic of the operator.



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