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From "Pengcheng Xiong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-16653) Mergejoin should give itself a correct tag
Date Wed, 31 May 2017 18:33:04 GMT

     [ https://issues.apache.org/jira/browse/HIVE-16653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Pengcheng Xiong updated HIVE-16653:
-----------------------------------
    Description: In a non-self-join mergejoin, e.g., we join tab_a and tab_b, it will give
different branches different tags. However in a self-join mergejoin, both of the branches
comes from the same table scan, we need to give it a correct tag.

> Mergejoin should give itself a correct tag
> ------------------------------------------
>
>                 Key: HIVE-16653
>                 URL: https://issues.apache.org/jira/browse/HIVE-16653
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Pengcheng Xiong
>            Assignee: Pengcheng Xiong
>         Attachments: HIVE-16653.01.patch
>
>
> In a non-self-join mergejoin, e.g., we join tab_a and tab_b, it will give different branches
different tags. However in a self-join mergejoin, both of the branches comes from the same
table scan, we need to give it a correct tag.



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