dongjoon-hyun opened a new pull request, #56824: URL: https://github.com/apache/spark/pull/56824
### What changes were proposed in this pull request? This PR aims to enable `spark.rdd.compress` by default. ### Why are the changes needed? Compressing serialized RDD partitions saves memory and disk at a small CPU cost. PySpark has long defaulted this to `true`; making it the core default applies the same proven default across all languages. ### Does this PR introduce _any_ user-facing change? Yes. Serialized RDD partitions are now compressed by default. To restore the previous behavior, set `spark.rdd.compress` to `false`. ### How was this patch tested? Pass the CIs. ### Was this patch authored or co-authored using generative AI tooling? Generated-by: Claude Opus 4.8 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
