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https://issues.apache.org/jira/browse/SPARK-32067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17206082#comment-17206082
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Stijn De Haes commented on SPARK-32067:
---------------------------------------
Also ran into this today. This actually makes the pod template feature useless
for me. I'll try to make a PR next week to do the proposed solution :)
> [K8S] Executor pod template ConfigMap of ongoing submission got inadvertently
> altered by subsequent submission
> --------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-32067
> URL: https://issues.apache.org/jira/browse/SPARK-32067
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes
> Affects Versions: 2.4.7, 3.0.1
> Reporter: James Yu
> Priority: Minor
>
> THE BUG:
> The bug is reproducible by spark-submit two different apps (app1 and app2)
> with different executor pod templates (e.g., different labels) to K8s
> sequentially, with app2 launching while app1 is still in the middle of
> ramping up all its executor pods. The unwanted result is that some launched
> executor pods of app1 end up having app2's executor pod template applied to
> them.
> The root cause appears to be that app1's podspec-configmap got overwritten by
> app2 during the overlapping launching periods because both apps use the same
> ConfigMap (name). This causes some app1's executor pods being ramped up after
> app2 is launched to be inadvertently launched with the app2's pod template.
> The issue can be seen as follows:
> First, after submitting app1, you get these configmaps:
> {code:java}
> NAMESPACE NAME DATA AGE
> default app1-1111111111111111-driver-conf-map 1 9m46s
> default podspec-configmap 1 12m{code}
> Then submit app2 while app1 is still ramping up its executors. The
> podspec-confimap is modified by app2.
> {code:java}
> NAMESPACE NAME DATA AGE
> default app1-1111111111111111-driver-conf-map 1 11m43s
> default app2-2222222222222222-driver-conf-map 1 10s
> default podspec-configmap 1 13m57s{code}
>
> PROPOSED SOLUTION:
> Properly prefix the podspec-configmap for each submitted app, ideally the
> same way as the driver configmap:
> {code:java}
> NAMESPACE NAME DATA AGE
> default app1-1111111111111111-driver-conf-map 1 11m43s
> default app1-1111111111111111-podspec-configmap 1 13m57s
> default app2-2222222222222222-driver-conf-map 1 10s
> default app2-2222222222222222-podspec-configmap 1 3m{code}
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