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Posted to issues@hive.apache.org by "Zoltan Haindrich (JIRA)" <ji...@apache.org> on 2018/02/02 12:12:00 UTC

[jira] [Updated] (HIVE-18523) Fix summary row in case there are no inputs

     [ https://issues.apache.org/jira/browse/HIVE-18523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zoltan Haindrich updated HIVE-18523:
------------------------------------
    Attachment: HIVE-18523.01.patch

> Fix summary row in case there are no inputs
> -------------------------------------------
>
>                 Key: HIVE-18523
>                 URL: https://issues.apache.org/jira/browse/HIVE-18523
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Zoltan Haindrich
>            Assignee: Zoltan Haindrich
>            Priority: Major
>         Attachments: HIVE-18523.01.patch
>
>
> HIVE-17617 added a fix to handle empty groups correctly; however it might be possible that the summary row is returned multiple times - in case the mappers are "seem" to be optimized away...



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