Jesus Camacho Rodriguez created HIVE-20744: ----------------------------------------------
Summary: 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 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)