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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11387) CBO: Calcite Operator To Hive Operator (Calcite Return Path) : fix reduce_deduplicate optimization
Date Wed, 29 Jul 2015 22:39:04 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pengcheng Xiong updated HIVE-11387:
-----------------------------------
    Description: The main problem is that, due to return path, now we may have (RS1-GBY2)-(RS3-GBY4)
when map.aggr=false, i.e., no map aggr. However, in the non-return path, it will be treated
as (RS1)-(GBY2-RS3-GBY4). The main problem is that it does not take into account of the setting.

> CBO: Calcite Operator To Hive Operator (Calcite Return Path) : fix reduce_deduplicate
optimization
> --------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-11387
>                 URL: https://issues.apache.org/jira/browse/HIVE-11387
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-11387.01.patch, HIVE-11387.02.patch, HIVE-11387.03.patch
>
>
> The main problem is that, due to return path, now we may have (RS1-GBY2)-(RS3-GBY4) when
map.aggr=false, i.e., no map aggr. However, in the non-return path, it will be treated as
(RS1)-(GBY2-RS3-GBY4). The main problem is that it does not take into account of the setting.



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