10110346 opened a new pull request #23695: [SPARK-26780][CORE]Improve shuffle read using ReadAheadInputStream URL: https://github.com/apache/spark/pull/23695 ## What changes were proposed in this pull request? Using `ReadAheadInputStream` to improve shuffle read performance. `ReadAheadInputStream` can save cpu utilization and almost no performance regression ## How was this patch tested? 1. Using unit tests for correctness testing 2.TPCDS test: ./spark-shell --executor-memory 4G --total-executor-cores 6 --conf "spark.sql.shuffle.partitions=6" --conf "spark.shuffle.detectCorrupt=false" --jars /home/spark-sql-perf-assembly-0.5.0-SNAPSHOT.jar
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
