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Saisai Shao commented on SPARK-12400: ------------------------------------- So from my understanding this will only be existed when bypassing to hash style shuffle path? > Avoid writing a shuffle file if a partition has no output (empty) > ----------------------------------------------------------------- > > Key: SPARK-12400 > URL: https://issues.apache.org/jira/browse/SPARK-12400 > Project: Spark > Issue Type: Improvement > Components: Shuffle > Reporter: Reynold Xin > > A Spark user was asking for automatic setting of # reducers. When I pushed > for more, it turned out the problem for them is that 200 creates too many > files, when most partitions are empty. > It seems like a simple thing we can do is to avoid creating shuffle files if > a partition is empty. -- 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