dongjoon-hyun opened a new pull request #32286: URL: https://github.com/apache/spark/pull/32286
### What changes were proposed in this pull request? This PR aims to use `zstd` as `spark.io.compression.codec` instead of `lz4` in order to reduce the disk IOs and traffic during shuffle processing and worker decommission storage migration (between executors and to external storage). - Since SPARK-29434 and SPARK-29576, Apache Spark 3.0+ uses ZSTD MapOutputStatus Ser/Deser instead of `GZIP`. - Since SPARK-34503, Apache Spark 3.2 uses ZSTD for `spark.eventLog.compression.codec` by default. ### Why are the changes needed? To reduce the disk footprint. ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Pass the CIs. -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
