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From "Harish Butani (JIRA)" <>
Subject [jira] [Commented] (HIVE-4041) Support multiple partitionings in a single Query
Date Tue, 19 Mar 2013 16:19:18 GMT


Harish Butani commented on HIVE-4041:

Thanks Ashutosh. I have
- removed change to ReduceSinkDeDuplication
- added comments to WindowingComponentizer.
> Support multiple partitionings in a single Query
> ------------------------------------------------
>                 Key: HIVE-4041
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: PTF-Windowing
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>         Attachments: HIVE-4041.D9381.1.patch, HIVE-4041.D9381.2.patch, WindowingComponentization.pdf
> Currently we disallow queries if the partition specifications of all Wdw fns are not
the same. We can relax this by generating multiple PTFOps based on the unique partitionings
in a Query. For partitionings that only differ in sort, we can introduce a sort step in between
PTFOps, which can happen in the same Reduce task.

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