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Date: Wed, 5 May 2010 18:48:16 -0400 (EDT)
From: "John Sichi (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Commented: (HIVE-1335) DataNucleus should use connection
 pooling
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    [ https://issues.apache.org/jira/browse/HIVE-1335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12864569#action_12864569 ] 

John Sichi commented on HIVE-1335:
----------------------------------

Heh, whoops, looks like they made datanucleus-connectionpool depend on every available pool implentation (plus datanucleus itself).  There may be a way to tell it to fetch just datanucleus-connectionpool without its dependencies.


> DataNucleus should use connection pooling
> -----------------------------------------
>
>                 Key: HIVE-1335
>                 URL: https://issues.apache.org/jira/browse/HIVE-1335
>             Project: Hadoop Hive
>          Issue Type: Improvement
>            Reporter: Edward Capriolo
>            Assignee: Edward Capriolo
>             Fix For: 0.6.0
>
>         Attachments: commons-dbcp-1.2.2.jar, commons-dbcp.LICENSE, commons-pool-1.2.jar, commons-pool.LICENSE, datanucleus-connectionpool-1.0.2.jar, datanucleus-connectionpool.LICENSE, hive-1335.patch.txt
>
>
> Currently each Data Nucleus operation disconnects and reconnects to the MetaStore over jdbc. Queries fail to even explain properly in cases where a table has many partitions. This is fixed by enabling one parameter and including several jars.

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