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Xuefu Zhang commented on HIVE-15489: ------------------------------------ +1, Patch looks good. One minor suggestion: it would be great if we can add some map-join test cases with the introduced configuration to true to server as a sanity check. Otherwise, the new code path will not be exercised in ptest. > Alternatively use table scan stats for HoS > ------------------------------------------ > > Key: HIVE-15489 > URL: https://issues.apache.org/jira/browse/HIVE-15489 > Project: Hive > Issue Type: Improvement > Components: Spark, Statistics > Affects Versions: 2.2.0 > Reporter: Chao Sun > Assignee: Chao Sun > Attachments: HIVE-15489.1.patch, HIVE-15489.2.patch, > HIVE-15489.3.patch, HIVE-15489.6.patch, HIVE-15489.wip.patch > > > For MapJoin in HoS, we should provide an option to only use stats in the TS > rather than the populated stats in each of the join branch. This could be > pretty conservative but more reliable. -- This message was sent by Atlassian JIRA (v6.3.15#6346)