[ https://issues.apache.org/jira/browse/SPARK-8695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xiangrui Meng updated SPARK-8695: --------------------------------- Priority: Minor (was: Major) > TreeAggregation shouldn't be triggered for 5 partitions > ------------------------------------------------------- > > Key: SPARK-8695 > URL: https://issues.apache.org/jira/browse/SPARK-8695 > Project: Spark > Issue Type: Improvement > Components: MLlib, Spark Core > Affects Versions: 1.5.0 > Reporter: Xiangrui Meng > Assignee: Xiangrui Meng > Priority: Minor > > If an RDD has 5 partitions, tree aggregation doesn't reduce the wall-clock > time. Instead, it introduces scheduling and shuffling overhead. We should > update the condition to use tree aggregation (code attached): > {code} > while (numPartitions > scale + numPartitions / scale) { > {code} -- 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