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https://issues.apache.org/jira/browse/PHOENIX-4605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16364815#comment-16364815
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James Taylor commented on PHOENIX-4605:
---------------------------------------

Yep, that’s more or less what I’m proposing. We’d need to potentially 
initialize both transaction engines when we establish the connection to a 
cluster, though. Or perhaps better would be to establish this lazily the first 
time a transaction starts.

> Add TRANSACTION_PROVIDER and DEFAULT_TRANSACTION_PROVIDER instead of using 
> boolean
> ----------------------------------------------------------------------------------
>
>                 Key: PHOENIX-4605
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4605
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Priority: Major
>
> We should deprecate QueryServices.DEFAULT_TABLE_ISTRANSACTIONAL_ATTRIB and 
> instead have a QueryServices.DEFAULT_TRANSACTION_PROVIDER now that we'll have 
> two transaction providers: Tephra and Omid. Along the same lines, we should 
> add a TRANSACTION_PROVIDER column to SYSTEM.CATALOG  and stop using the 
> IS_TRANSACTIONAL table property. For backwards compatibility, we can assume 
> the provider is Tephra if the existing properties are set to true.



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