Jesus Camacho Rodriguez updated HIVE-10506:
    Attachment: HIVE-10506.01.patch

[~jpullokkaran], you are right, sorry I didn't get before what you were 
meaning. I have just uploaded a new patch that checks dynamically those cases. 
Could you check it? Thanks

> CBO (Calcite Return Path): Disallow return path to be enable if CBO is off
> --------------------------------------------------------------------------
>                 Key: HIVE-10506
>                 URL: https://issues.apache.org/jira/browse/HIVE-10506
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>             Fix For: 1.2.0
>         Attachments: HIVE-10506.01.patch, HIVE-10506.patch
> If hive.cbo.enable=false and hive.cbo.returnpath=true then some optimizations 
> would kick in. It's quite possible that in customer environment, they might 
> end up in these scenarios; we should prevent it.

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