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Jesus Camacho Rodriguez commented on HIVE-20744: ------------------------------------------------ [~ashutoshc], uploaded the latest version to https://reviews.apache.org/r/69258/ . Thanks > Use SQL constraints to improve join reordering algorithm > -------------------------------------------------------- > > Key: HIVE-20744 > URL: https://issues.apache.org/jira/browse/HIVE-20744 > Project: Hive > Issue Type: Bug > Components: CBO > Reporter: Jesus Camacho Rodriguez > Assignee: Jesus Camacho Rodriguez > Priority: Major > Attachments: HIVE-20744.01.patch, HIVE-20744.02.patch, > HIVE-20744.03.patch, HIVE-20744.patch > > > Till now, it was all based on stats stored for the base tables and their > columns. Now the optimizer can rely on constraints. Hence, this patch is for > the join reordering costing to use constraints, and if it does not find any, > rely on old code path. -- This message was sent by Atlassian JIRA (v7.6.3#76005)