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Liang-Chi Hsieh commented on SPARK-20953: ----------------------------------------- [~rxin] Yeah, thanks for pinging me. I'll look into this. > Add hash map metrics to aggregate and join > ------------------------------------------ > > Key: SPARK-20953 > URL: https://issues.apache.org/jira/browse/SPARK-20953 > Project: Spark > Issue Type: New Feature > Components: SQL > Affects Versions: 2.2.0 > Reporter: Reynold Xin > > It would be useful if we can identify hash map collision issues early on. > We should add avg hash map probe metric to aggregate operator and hash join > operator and report them. If the avg probe is greater than a specific > (configurable) threshold, we should log an error at runtime. > The primary classes to look at are UnsafeFixedWidthAggregationMap, > HashAggregateExec, HashedRelation, HashJoin. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org