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Vineet Garg commented on HIVE-20842: ------------------------------------ [~ashutoshc] Review request is at https://reviews.apache.org/r/69257/ > Fix logic introduced in HIVE-20660 to estimate statistics for group by > ---------------------------------------------------------------------- > > Key: HIVE-20842 > URL: https://issues.apache.org/jira/browse/HIVE-20842 > Project: Hive > Issue Type: Bug > Components: Statistics > Affects Versions: 4.0.0 > Reporter: Vineet Garg > Assignee: Vineet Garg > Priority: Major > Attachments: HIVE-20842.1.patch, HIVE-20842.2.patch, > HIVE-20842.3.patch, HIVE-20842.4.patch, HIVE-20842.5.patch > > > HIVE-20660 introduced better estimation for group by operator. But the logic > did not account for Partial and Full group by separately. > For partial group by parallelism (i.e. number of tasks) should be taken into > account. -- This message was sent by Atlassian JIRA (v7.6.3#76005)