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https://issues.apache.org/jira/browse/HIVE-4900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13717507#comment-13717507
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Ashutosh Chauhan commented on HIVE-4900:
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I see. Than is this sufficient for us to upgrade to DN 3.x ? If yes, than it 
seems there is no need to Db upgrade (atleast for mysql). Is that correct?
                
> Fix the mismatched column names in package.jdo
> ----------------------------------------------
>
>                 Key: HIVE-4900
>                 URL: https://issues.apache.org/jira/browse/HIVE-4900
>             Project: Hive
>          Issue Type: Bug
>          Components: Metastore
>    Affects Versions: 0.10.0, 0.11.0
>            Reporter: Xuefu Zhang
>            Assignee: Xuefu Zhang
>            Priority: Minor
>             Fix For: 0.12.0
>
>         Attachments: HIVE-4900.1.patch, HIVE-4900.2.patch, HIVE-4900.patch
>
>
> There are several errors in DataNucleus O-R mapping file, package.jdo, which 
> are not complained by the existing DN version. These errors may be subject to 
> future DN complaint (as experienced in HIVE-3632 and HIVE-2084). However, it 
> is still better if we fix these errors as it also creates some confusion in 
> the community.

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