Pranav Dev created SPARK-55341:
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Summary: 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
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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