[jira] [Updated] (HIVE-6959) Enable Constant propagation optimizer for Hive Vectorization

["Hari Sankar Sivarama Subramaniyan (JIRA)" <ji...@apache.org>]

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

Hari Sankar Sivarama Subramaniyan updated HIVE-6959:
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    Summary: Enable Constant propagation optimizer for Hive Vectorization  (was: Remove vectorization related constant expression folding code once Constant propagation optimizer for Hive is committed)

> Enable Constant propagation optimizer for Hive Vectorization
> ------------------------------------------------------------
>
>                 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-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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