Xuefu Zhang created SPARK-4921: ---------------------------------- Summary: Performance issue caused by TaskSetManager returning PROCESS_LOCAL for NO_PREF tasks Key: SPARK-4921 URL: https://issues.apache.org/jira/browse/SPARK-4921 Project: Spark Issue Type: Bug Components: Spark Core Affects Versions: 1.2.0 Reporter: Xuefu Zhang
During research for HIVE-9153, we found that TaskSetManager returns PROCESS_LOCAL for NO_PREF tasks, which may caused performance degradation. Changing the return value to NO_PREF, as demonstrated in the attached patch, seemingly improves the performance. -- 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