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https://issues.apache.org/jira/browse/SPARK-26973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16775339#comment-16775339
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Stavros Kontopoulos commented on SPARK-26973:
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[~foxish] [~srowen] [~shaneknapp] [~vanzin] fyi.
> Kubernetes version support strategy on test nodes and for the backend
> ---------------------------------------------------------------------
>
> Key: SPARK-26973
> URL: https://issues.apache.org/jira/browse/SPARK-26973
> Project: Spark
> Issue Type: Test
> Components: Kubernetes
> Affects Versions: 3.0.0
> Reporter: Stavros Kontopoulos
> Priority: Major
>
> Kubernetes has a policy for supporting three minor releases and the current
> are defined here:
> [https://github.com/kubernetes/sig-release/blob/master/releases/patch-releases.md.|https://github.com/kubernetes/sig-release/blob/master/releases/patch-releases.md].]
> Moving from release 1.x to 1.(x+1) happens roughly every 100
> days:[https://gravitational.com/blog/kubernetes-release-cycle.]
> This has an effect on dependencies upgrade at the Spark on K8s backend and
> the version of Minikube required to be supported for testing. One other issue
> is what the users actually want at the given time of a release. Some popular
> vendors like EKS([https://aws.amazon.com/eks/faqs/] have their own roadmap
> for releases.
> Follow the comments a recent discussion on the topic:
> [https://github.com/apache/spark/pull/23814.]
> Clearly we need a strategy for this.
> A couple of options for the current state of things:
> a) Support only the last two version, but that leaves out a version that
> still receives patches.
> b) Support only the latest, which makes testing easier, but leaves out other
> currently maintained version.
> A good strategy will optimize the following:
> 1) percentage of users satisfied at release time.
> 2) how long it takes to support the latest K8s version
> 3) testing requirements eg. minikube versions used
>
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