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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-6959) Remove vectorization related constant expression folding code once Constant propagation optimizer for Hive is committed
Date Thu, 07 Aug 2014 16:40:15 GMT

     [ https://issues.apache.org/jira/browse/HIVE-6959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ashutosh Chauhan updated HIVE-6959:
-----------------------------------

    Status: Open  (was: Patch Available)

Seems like vectorization_14.q & vector_coalesce.q failed to vectorize and vector_cast_constant.q
failed altogether.

> Remove vectorization related constant expression folding code once Constant propagation
optimizer for Hive is committed
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-6959
>                 URL: https://issues.apache.org/jira/browse/HIVE-6959
>             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-6959.3.patch, HIVE-6959.4.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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