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https://issues.apache.org/jira/browse/HIVE-8290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14175151#comment-14175151
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Alan Gates commented on HIVE-8290:
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bq. Was hive.support.concurrency required for transactions in 0.13.0?
Yes.

> With DbTxnManager configured, all ORC tables forced to be transactional
> -----------------------------------------------------------------------
>
>                 Key: HIVE-8290
>                 URL: https://issues.apache.org/jira/browse/HIVE-8290
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 0.14.0
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>            Priority: Blocker
>             Fix For: 0.14.0
>
>         Attachments: HIVE-8290.2.patch, HIVE-8290.patch
>
>
> Currently, once a user configures DbTxnManager to the be transaction manager, 
> all tables that use ORC are expected to be transactional.  This means they 
> all have to have buckets.  This most likely won't be what users want.
> We need to add a specific mark to a table so that users can indicate it 
> should be treated in a transactional way.



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