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Date: Mon, 20 Dec 2010 01:59:01 -0500 (EST)
From: "Ashutosh Chauhan (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Commented: (HIVE-1853) downgrade JDO version
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    [ https://issues.apache.org/jira/browse/HIVE-1853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12973122#action_12973122 ] 

Ashutosh Chauhan commented on HIVE-1853:
----------------------------------------

bq. We have a test case where 5 processes are concurrently issueing the same query -  explain extended insert .. select from <T>and once in a while, we get a error <T> not found - When we revert back the JDO version, the error is gone.

Namit,

Will it be possible to post the testcase which shows this problem?

> downgrade JDO version
> ---------------------
>
>                 Key: HIVE-1853
>                 URL: https://issues.apache.org/jira/browse/HIVE-1853
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>            Reporter: Namit Jain
>            Assignee: Paul Yang
>             Fix For: 0.7.0
>
>         Attachments: HIVE-1853.1.patch, HIVE-1853.2.patch
>
>
> After HIVE-1609, we are seeing some table not found errors intermittently.
> We have a test case where 5 processes are concurrently issueing the same query - 
> explain extended insert .. select from <T>
> and once in a while, we get a error <T> not found - 
> When we revert back the JDO version, the error is gone.
> We can investigate later to find the JDO bug, but for now this is a show-stopper for facebook, and needs
> to be reverted back immediately.
> This also means, that the filters will not be pushed to mysql.

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