[ https://issues.apache.org/jira/browse/SPARK-22537?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Apache Spark reassigned SPARK-22537: ------------------------------------ Assignee: (was: Apache Spark) > Aggregation of map output statistics on driver faces single point bottleneck > ---------------------------------------------------------------------------- > > Key: SPARK-22537 > URL: https://issues.apache.org/jira/browse/SPARK-22537 > Project: Spark > Issue Type: Improvement > Components: Spark Core > Affects Versions: 2.2.0 > Reporter: Chenzhao Guo > > In adaptive execution, the map output statistics of all mappers will be > aggregated after a stage is successfully executed. Driver takes the > aggregation job while it will get slow when the number of mapper * shuffle > partitions is large. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org