[ https://issues.apache.org/jira/browse/HIVE-291?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Namit Jain updated HIVE-291: ---------------------------- Status: Open (was: Patch Available) > [Hive] map-side aggregation should be automatically disabled at run-time if > it is not turning out to be useful > -------------------------------------------------------------------------------------------------------------- > > Key: HIVE-291 > URL: https://issues.apache.org/jira/browse/HIVE-291 > Project: Hadoop Hive > Issue Type: Bug > Components: Query Processor > Reporter: Namit Jain > Assignee: Namit Jain > Attachments: 291.1.txt > > > Map-side aggregation should be automatically disabled at run-time if it is > not turning out to be useful. > If map-side aggregation is not reducing the number of output rows, it is a > drain on the mapper, since it is consuming memory and performing unnecessary > hash lookups -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.