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https://issues.apache.org/jira/browse/SPARK-55963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-55963:
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Labels: pull-request-available (was: )
> Optimize snapshot traversal in ExecutorPodsAllocator
> ----------------------------------------------------
>
> Key: SPARK-55963
> URL: https://issues.apache.org/jira/browse/SPARK-55963
> Project: Spark
> Issue Type: Improvement
> Components: Kubernetes
> Affects Versions: 4.1.1
> Reporter: Dejiu Lu
> Priority: Major
> Labels: pull-request-available
>
> Optimize the snapshot preprocessing in
> `ExecutorPodsAllocator.onNewSnapshots()`.
> Currently, to collect known executor IDs and PVC names, the code calls
> `flatMap` + `distinct` across all snapshots. Since each snapshot is built
> incrementally via `withUpdate()`, they overlap heavily . This leads to a lot
> of redundant work.
> We can merge all snapshots into a single aggregated map up front, which
> deduplicates by executor ID naturally. PVC names are then extracted from this
> deduplicated map.
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