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From "wangwenli (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-9044) Union input to a join operator poses problem when converting to map join [Spark Branch]
Date Wed, 06 Jul 2016 12:06:10 GMT

     [ https://issues.apache.org/jira/browse/HIVE-9044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

wangwenli updated HIVE-9044:
----------------------------
    Attachment: hive-9044.1.patch

> Union input to a join operator poses problem when converting to map join [Spark Branch]
> ---------------------------------------------------------------------------------------
>
>                 Key: HIVE-9044
>                 URL: https://issues.apache.org/jira/browse/HIVE-9044
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Spark
>            Reporter: Xuefu Zhang
>            Assignee: wangwenli
>         Attachments: hive-9044.1.patch
>
>
> Followup for HIVE-8908. When a join operator has a union input on the big table side,
we are not able to convert it to map join. The problem seems to be a result of the way we
handle union in generating plan and the way we convert join to map join. We need to find the
way to handle this.



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