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https://issues.apache.org/jira/browse/SPARK-3670?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean Owen resolved SPARK-3670.
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Resolution: Won't Fix
Resolved for now per parent discussion
> Add log-structured updates with merge
> -------------------------------------
>
> Key: SPARK-3670
> URL: https://issues.apache.org/jira/browse/SPARK-3670
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Core
> Reporter: Ankur Dave
> Assignee: Ankur Dave
>
> This will serve as an alternative implementation of updates in IndexedRDD.
> The other alternative is purely functional data structures (ImmutableVector,
> etc.). Log-structured updates may perform better when updates are widely
> distributed across the key space.
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