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ASF GitHub Bot logged work on HIVE-24084: ----------------------------------------- Author: ASF GitHub Bot Created on: 02/Sep/20 14:00 Start Date: 02/Sep/20 14:00 Worklog Time Spent: 10m Work Description: kgyrtkirk commented on a change in pull request #1439: URL: https://github.com/apache/hive/pull/1439#discussion_r482092255 ########## File path: ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveAggregateJoinTransposeRule.java ########## @@ -290,7 +291,8 @@ public void onMatch(RelOptRuleCall call) { RelNode r = relBuilder.build(); RelOptCost afterCost = mq.getCumulativeCost(r); RelOptCost beforeCost = mq.getCumulativeCost(aggregate); - if (afterCost.isLt(beforeCost)) { Review comment: yes; if we use `isLe` the current cost model which only takes rowcount into account will prefer the pushing aggregates further there is another alternative to the `force` based approach: the rule can be configured to use the more advanced cost system - so that it could take cpu/io cost into account ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 477884) Time Spent: 50m (was: 40m) > Enhance cost model to push down more Aggregates > ----------------------------------------------- > > Key: HIVE-24084 > URL: https://issues.apache.org/jira/browse/HIVE-24084 > Project: Hive > Issue Type: Improvement > Reporter: Zoltan Haindrich > Assignee: Zoltan Haindrich > Priority: Major > Labels: pull-request-available > Time Spent: 50m > Remaining Estimate: 0h > -- This message was sent by Atlassian Jira (v8.3.4#803005)