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From "Ashutosh Chauhan (JIRA)" <>
Subject [jira] Commented: (HIVE-1853) downgrade JDO version
Date Thu, 16 Dec 2010 22:07:03 GMT


Ashutosh Chauhan commented on HIVE-1853:

That will disable the feature on metastore itself. I was hoping just undoing the changes of
HIVE-1660 will revert back Hive to old behavior where QL was doing the pruning and thus will
solve the problem you guys are seeing now. That way we could have left partition pruning in
metastore to play with and try to fix the real bug.

> downgrade JDO version
> ---------------------
>                 Key: HIVE-1853
>                 URL:
>             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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