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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-2084) Upgrade datanucleus from 2.0.3 to 3.0.1
Date Fri, 19 Jul 2013 04:10:56 GMT

    [ https://issues.apache.org/jira/browse/HIVE-2084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13713319#comment-13713319
] 

Xuefu Zhang commented on HIVE-2084:
-----------------------------------

I'm actually working on HIVE-3632, which is similar to this, yet having a different motivation.
I'm yet to be convinced that a DB upgrade is required, and even if so, it seems unrelated
to DN upgrade (but rather out of a bug in the metastore schema definition). That is yet to
be seen, as review goes on for HIVE-3632.

As far as Hibernate is concerned, I think it was excluded at very beginning due to incompatible
license.
                
> Upgrade datanucleus from 2.0.3 to 3.0.1
> ---------------------------------------
>
>                 Key: HIVE-2084
>                 URL: https://issues.apache.org/jira/browse/HIVE-2084
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore
>            Reporter: Ning Zhang
>            Assignee: Sushanth Sowmyan
>              Labels: datanucleus
>         Attachments: ASF.LICENSE.NOT.GRANTED--HIVE-2084.D2397.1.patch, HIVE-2084.1.patch.txt,
HIVE-2084.2.patch.txt, HIVE-2084.D5685.1.patch, HIVE-2084.patch
>
>
> It seems the datanucleus 2.2.3 does a better join in caching. The time it takes to get
the same set of partition objects takes about 1/4 of the time it took for the first time.
While with 2.0.3, it took almost the same amount of time in the second execution. We should
retest the test case mentioned in HIVE-1853, HIVE-1862.

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