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From "Gopal V (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9937) LLAP: Vectorized Field-By-Field Serialize / Deserialize to support new Vectorized Map Join
Date Mon, 16 Mar 2015 17:06:38 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14363494#comment-14363494
] 

Gopal V commented on HIVE-9937:
-------------------------------

[~mmccline]: Pretty impressive performance difference for a shuffle-heavy group-by is almost
~3x cpu savings.

But there are some off-by-one errors somewhere, the results out of a few keys seem incorrect
in the smaller test runs. Trying to produce a narrower test-case.

> LLAP: Vectorized Field-By-Field Serialize / Deserialize to support new Vectorized Map
Join
> ------------------------------------------------------------------------------------------
>
>                 Key: HIVE-9937
>                 URL: https://issues.apache.org/jira/browse/HIVE-9937
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Matt McCline
>            Assignee: Matt McCline
>         Attachments: HIVE-9937.01.patch
>
>




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