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Posted to dev@hive.apache.org by "Jesús Camacho Rodríguez (JIRA)" <ji...@apache.org> on 2014/11/20 18:24:34 UTC

[jira] [Reopened] (HIVE-8435) Add identity project remover optimization

     [ https://issues.apache.org/jira/browse/HIVE-8435?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesús Camacho Rodríguez reopened HIVE-8435:
-------------------------------------------

> Add identity project remover optimization
> -----------------------------------------
>
>                 Key: HIVE-8435
>                 URL: https://issues.apache.org/jira/browse/HIVE-8435
>             Project: Hive
>          Issue Type: New Feature
>          Components: Logical Optimizer
>    Affects Versions: 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.0
>            Reporter: Ashutosh Chauhan
>            Assignee: Jesús Camacho Rodríguez
>              Labels: TODOC15
>             Fix For: 0.15.0
>
>         Attachments: HIVE-8435.02.patch, HIVE-8435.03.patch, HIVE-8435.03.patch, HIVE-8435.04.patch, HIVE-8435.05.patch, HIVE-8435.05.patch, HIVE-8435.06.patch, HIVE-8435.07.patch, HIVE-8435.08.patch, HIVE-8435.09.patch, HIVE-8435.1.patch, HIVE-8435.10.patch, HIVE-8435.patch
>
>
> In some cases there is an identity project in plan which is useless. Better to optimize it away to avoid evaluating it without any benefit at runtime.



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