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From "Brock Noland (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-5538) Turn on vectorization by default.
Date Tue, 11 Nov 2014 04:55:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-5538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14205946#comment-14205946
] 

Brock Noland commented on HIVE-5538:
------------------------------------

We were using the tpc-ds 88 and MR:

{noformat}
--------------------------------------------------------------------
enabled                          769.21
--------------------------------------------------------------------
disabled                         758.33
(time in seconds)
{noformat}

not sure of the dataset size. Would you happen to be able to test that query?

> Turn on vectorization by default.
> ---------------------------------
>
>                 Key: HIVE-5538
>                 URL: https://issues.apache.org/jira/browse/HIVE-5538
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Jitendra Nath Pandey
>            Assignee: Matt McCline
>         Attachments: HIVE-5538.1.patch, HIVE-5538.2.patch, HIVE-5538.3.patch, HIVE-5538.4.patch,
HIVE-5538.5.patch, HIVE-5538.5.patch, HIVE-5538.6.patch, HIVE-5538.61.patch
>
>
>   Vectorization should be turned on by default, so that users don't have to specifically
enable vectorization. 
>   Vectorization code validates and ensures that a query falls back to row mode if it
is not supported on vectorized code path. 



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