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Posted to issues@spark.apache.org by "Herman van Hövell (Jira)" <ji...@apache.org> on 2026/02/05 13:40:00 UTC

[jira] [Assigned] (SPARK-55341) Add disk only optional feature flag when adding cached blocks

     [ https://issues.apache.org/jira/browse/SPARK-55341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Herman van Hövell reassigned SPARK-55341:
-----------------------------------------

    Assignee: Pranav Dev

> Add disk only optional feature flag when adding cached blocks
> -------------------------------------------------------------
>
>                 Key: SPARK-55341
>                 URL: https://issues.apache.org/jira/browse/SPARK-55341
>             Project: Spark
>          Issue Type: Task
>          Components: Connect, Spark Core
>    Affects Versions: 4.2.0
>            Reporter: Pranav Dev
>            Assignee: Pranav Dev
>            Priority: Minor
>              Labels: pull-request-available
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> Cached artifact blocks in ArtifactManager currently use {{MEMORY_AND_DISK_SER}} storage level. In some scenarios with large artifacts, especially large local relations, this can cause memory pressure.
> We can add a flag to control the storage level used for cached blocks:
>  * When enabled: uses {{DISK_ONLY}} storage level to reduce memory pressure
>  * When disabled (default): uses {{MEMORY_AND_DISK_SER}} storage level (current behavior)
> This allows users to opt into disk-only storage for cached artifacts when memory is constrained, while maintaining backward compatibility with the default behavior.



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