XiDuo You created SPARK-35923: --------------------------------- Summary: Coalesce empty partition with mixed CoalescedPartitionSpec and PartialReducerPartitionSpec Key: SPARK-35923 URL: https://issues.apache.org/jira/browse/SPARK-35923 Project: Spark Issue Type: Improvement Components: SQL Affects Versions: 3.2.0 Reporter: XiDuo You
Since [SPARK-35447](https://issues.apache.org/jira/browse/SPARK-35447), we apply `OptimizeSkewedJoin` before `CoalesceShufflePartitions`. However, There are something different with the order of these two rules. Let's say if we have a skewed partitions: [0, 128MB, 0, 128MB, 0]: # coalesce partitions first then optimize skewed partitions: [64MB, 64MB, 64MB, 64MB] # optimize skew partition first then coalesce partitions: [0, 64MB, 64MB, 0, 64MB, 64MB, 0] So we can do coalesce in ShufflePartitionsUtil.coalescePartitionsWithSkew with mixed CoalescedPartitionSpec and PartialReducerPartitionSpec if CoalescedPartitionSpec is empty. -- 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