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Posted to issues@hive.apache.org by "Prasanth Jayachandran (JIRA)" <ji...@apache.org> on 2015/04/27 22:30:38 UTC

[jira] [Updated] (HIVE-10286) SARGs: Type Safety via PredicateLeaf.type

     [ https://issues.apache.org/jira/browse/HIVE-10286?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prasanth Jayachandran updated HIVE-10286:
-----------------------------------------
    Attachment: HIVE-10286.1.patch

> 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
>
>
> 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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