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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10286) SARGs: Type Safety via PredicateLeaf.type
Date Wed, 29 Apr 2015 03:21:06 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14518652#comment-14518652
] 

Prasanth Jayachandran commented on HIVE-10286:
----------------------------------------------

I will go over the test cases again to make sure the changes are correct.

> SARGs: Type Safety via PredicateLeaf.type
> -----------------------------------------
>
>                 Key: HIVE-10286
>                 URL: https://issues.apache.org/jira/browse/HIVE-10286
>             Project: Hive
>          Issue Type: Bug
>          Components: File Formats, Serializers/Deserializers
>            Reporter: Gopal V
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-10286.1.patch, HIVE-10286.2.patch
>
>
> The Sargs impl today converts the statsObj to the type of the predicate object before
doing any comparisons.
> To satisfy the PPD requirements, the conversion has to be coerced to the type specified
in PredicateLeaf.type.
> The type conversions in Hive are standard and have a fixed promotion order.
> Therefore the PredicateLeaf has to do type changes which match the exact order of type
coercions offered by the FilterOperator.



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