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From "Eric Hanson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-6017) Contribute Decimal128 high-performance decimal(p, s) package from Microsoft to Hive
Date Thu, 02 Jan 2014 22:15:50 GMT

    [ https://issues.apache.org/jira/browse/HIVE-6017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13860859#comment-13860859
] 

Eric Hanson commented on HIVE-6017:
-----------------------------------

I checked up on this. Microsoft has signed the Apache Corporate Contributor License Agreement
(CCLA) and the people who wrote the code signed the Apache ICLA. These agreements plus the
copyright notice in the code cover the situation.

> Contribute Decimal128 high-performance decimal(p, s) package from Microsoft to Hive
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-6017
>                 URL: https://issues.apache.org/jira/browse/HIVE-6017
>             Project: Hive
>          Issue Type: Sub-task
>    Affects Versions: 0.13.0
>            Reporter: Eric Hanson
>            Assignee: Eric Hanson
>         Attachments: HIVE-6017.01.patch, HIVE-6017.02.patch, HIVE-6017.03.patch, HIVE-6017.04.patch
>
>
> Contribute the Decimal128 high-performance decimal package developed by Microsoft to
Hive. This was originally written for Microsoft PolyBase by Hideaki Kimura.
> This code is about 8X more efficient than Java BigDecimal for typical operations. It
uses a finite (128 bit) precision and can handle up to decimal(38, X). It is also "mutable"
so you can change the contents of an existing object. This helps reduce the cost of new()
and garbage collection.



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