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Laljo John Pullokkaran commented on HIVE-9140: ---------------------------------------------- It seems like we should run constant propagation before join ordering in order to influence costing decisions (especially this becomes relevant when we do join algorithm selection based on I/O & cpu cost) and may be we need to run this after as well to remove the true predicate. > Add ReduceExpressionRules from Calcite into Hive > ------------------------------------------------ > > Key: HIVE-9140 > URL: https://issues.apache.org/jira/browse/HIVE-9140 > Project: Hive > Issue Type: Improvement > Components: CBO, Logical Optimizer > Affects Versions: 0.14.0 > Reporter: Ashutosh Chauhan > Assignee: Ashutosh Chauhan > Attachments: HIVE-9140.patch > > > These rules provide a form of constant folding. -- This message was sent by Atlassian JIRA (v6.3.4#6332)