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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-14228) Better row count estimates for outer join during physical planning
Date Thu, 14 Jul 2016 16:28:20 GMT

     [ https://issues.apache.org/jira/browse/HIVE-14228?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-14228:
------------------------------------
    Description: Currently, row counts for all join types are estimated as if they are inner
join. We need to update that logic to take into account different join types.  (was: Currently,
row counts for all join types are estimated as if they are outer join. We need to update that
logic to take into account different join types.)

> Better row count estimates for outer join during physical planning
> ------------------------------------------------------------------
>
>                 Key: HIVE-14228
>                 URL: https://issues.apache.org/jira/browse/HIVE-14228
>             Project: Hive
>          Issue Type: Improvement
>          Components: Physical Optimizer
>    Affects Versions: 1.2.0, 2.0.0, 2.1.0
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>         Attachments: HIVE-14228.patch
>
>
> Currently, row counts for all join types are estimated as if they are inner join. We
need to update that logic to take into account different join types.



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