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https://issues.apache.org/jira/browse/SPARK-24248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Cheah resolved SPARK-24248.
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Resolution: Fixed
Fix Version/s: 2.4.0
> [K8S] Use the Kubernetes cluster as the backing store for the state of pods
> ---------------------------------------------------------------------------
>
> Key: SPARK-24248
> URL: https://issues.apache.org/jira/browse/SPARK-24248
> Project: Spark
> Issue Type: Improvement
> Components: Kubernetes
> Affects Versions: 2.3.0
> Reporter: Matt Cheah
> Priority: Major
> Fix For: 2.4.0
>
>
> We have a number of places in KubernetesClusterSchedulerBackend right now
> that maintains the state of pods in memory. However, the Kubernetes API can
> always give us the most up to date and correct view of what our executors are
> doing. We should consider moving away from in-memory state as much as can in
> favor of using the Kubernetes cluster as the source of truth for pod status.
> Maintaining less state in memory makes it so that there's a lower chance that
> we accidentally miss updating one of these data structures and breaking the
> lifecycle of executors.
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