Manu Zhang created SPARK-32083: ---------------------------------- Summary: Unnecessary tasks are launched when input is empty with AQE Key: SPARK-32083 URL: https://issues.apache.org/jira/browse/SPARK-32083 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 3.0.0 Reporter: Manu Zhang
[https://github.com/apache/spark/pull/28226] meant to avoid launching unnecessary tasks for 0-size partitions when AQE is enabled. However, when all partitions are empty, the number of partitions will be `spark.sql.adaptive.coalescePartitions.initialPartitionNum` and (a lot of) unnecessary tasks are launched in this case. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org