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From "Hari Sankar Sivarama Subramaniyan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-11428) Performance: Struct IN() clauses are extremely slow (~10x slower)
Date Tue, 04 Aug 2015 08:08:05 GMT

     [ https://issues.apache.org/jira/browse/HIVE-11428?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hari Sankar Sivarama Subramaniyan updated HIVE-11428:
-----------------------------------------------------
    Attachment: HIVE-11428.1.patch

cc-ing [~gopalv] and [~jcamachorodriguez] for review.

Thanks
Hari

> Performance: Struct IN() clauses are extremely slow (~10x slower) 
> ------------------------------------------------------------------
>
>                 Key: HIVE-11428
>                 URL: https://issues.apache.org/jira/browse/HIVE-11428
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 1.3.0, 2.0.0
>            Reporter: Gopal V
>            Assignee: Hari Sankar Sivarama Subramaniyan
>         Attachments: HIVE-11428.1.patch
>
>
> Hive today does not support tuple IN() clauses today, but provides a way to rewrite (a,b)
IN (...) using complex types.
> select * from table where STRUCT(a,b) IN (STRUCT(1,2), STRUCT(2,3) ...);
> This would be fine, except it is massively slower due to ObjectConvertors and Struct
constructor not being constant folded.



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