Davies Liu created SPARK-11425: ---------------------------------- Summary: Improve hybrid aggregation (sort-based after hash-based) Key: SPARK-11425 URL: https://issues.apache.org/jira/browse/SPARK-11425 Project: Spark Issue Type: Improvement Reporter: Davies Liu
After aggregation, the dataset could be smaller than inputs, so it's better to do hash based aggregation for all inputs, then using sort based aggregation to merge them. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org