[ https://issues.apache.org/jira/browse/HIVE-9636?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jesus Camacho Rodriguez resolved HIVE-9636. ------------------------------------------- Resolution: Invalid > Apply IdentityProjectRemover after other optimizations > ------------------------------------------------------ > > Key: HIVE-9636 > URL: https://issues.apache.org/jira/browse/HIVE-9636 > Project: Hive > Issue Type: Bug > Reporter: Jesus Camacho Rodriguez > Assignee: Jesus Camacho Rodriguez > Priority: Major > Attachments: HIVE-9636.patch > > > IdentityProjectRemove optimizer may remove some Project operators that change > the table alias for the input columns; this might cause optimizations such as > StatsOptimizer, that rely on colExprMap and consequently store table aliases, > to behave incorrectly. > To avoid this, we could apply IdentityProjectRemove optimization after all > the rest have been previously applied, and document it accordingly. -- This message was sent by Atlassian JIRA (v7.6.3#76005)