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From "Hari Sankar Sivarama Subramaniyan (JIRA)" <>
Subject [jira] [Updated] (HIVE-6959) Enable Constant propagation optimizer for Hive Vectorization
Date Fri, 08 Aug 2014 19:17:12 GMT


Hari Sankar Sivarama Subramaniyan updated HIVE-6959:

    Attachment: HIVE-6959.6.patch

updated the MiniTezCliDriver test results as well.

> Enable Constant propagation optimizer for Hive Vectorization
> ------------------------------------------------------------
>                 Key: HIVE-6959
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Hari Sankar Sivarama Subramaniyan
>            Assignee: Hari Sankar Sivarama Subramaniyan
>         Attachments: HIVE-6959.1.patch, HIVE-6959.2.patch, HIVE-6959.4.patch, HIVE-6959.5.patch,
> HIVE-5771 covers Constant propagation optimizer for Hive. Now that HIVE-5771 is committed,
we should remove any vectorization related code which duplicates this feature. For example,
a fn to be cleaned is VectorizarionContext::foldConstantsForUnaryExprs(). In addition to this
change, constant propagation should kick in when vectorization is enabled. i.e. we need to
lift the HIVE_VECTORIZATION_ENABLED restriction inside ConstantPropagate::transform().

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