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From "Matt McCline (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20315) Vectorization: Fix more NULL / Wrong Results issues and avoid unnecessary casts/conversions
Date Sat, 25 Aug 2018 00:51:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16592355#comment-16592355
] 

Matt McCline commented on HIVE-20315:
-------------------------------------

Removed DECIMAL_64 conversion avoidance changes for GROUP BY / JOIN since they caused external
test failures.

> Vectorization: Fix more NULL / Wrong Results issues and avoid unnecessary casts/conversions
> -------------------------------------------------------------------------------------------
>
>                 Key: HIVE-20315
>                 URL: https://issues.apache.org/jira/browse/HIVE-20315
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>            Priority: Critical
>             Fix For: 4.0.0
>
>         Attachments: HIVE-20315.01.patch, HIVE-20315.02.patch, HIVE-20315.03.patch, HIVE-20315.04.patch,
HIVE-20315.05.patch, HIVE-20315.06.patch, HIVE-20315.07.patch, HIVE-20315.08.patch, HIVE-20315.09.patch
>
>
> Generate multi-byte Unicode characters in addition to regular single byte characters
for random data.
> Don't CAST from STRING/VARCHAR/CHAR TO STRING since all are stored in vectorization without
padding.
> Fix vectorized BETWEEN expression work to avoid unnecessary CAST of DECIMAL constants.
> Fix NULL / Wrong Results issues in VectorElt.
> Add test for vectorized STRUCT field reference.



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