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https://issues.apache.org/jira/browse/PHOENIX-2984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15326692#comment-15326692
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Ankit Singhal commented on PHOENIX-2984:
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[~jamestaylor], I tested it at my side. Changes are backward compatible. 
Is there any case which may be I'm missing but you are seeing incompatibilities.



> Ensure backward compat is not broken after PHOENIX-2901
> -------------------------------------------------------
>
>                 Key: PHOENIX-2984
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2984
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: James Taylor
>            Assignee: Ankit Singhal
>            Priority: Blocker
>             Fix For: 4.8.0
>
>
> In PHOENIX-2901 you changed the location of the sequence for shared indexes, 
> right? We'll want to make sure at upgrade time in 
> ConnectionQueryServicesImpl.init() that we create the new sequence for 
> existing tables with views and shared indexes and that we start the sequence 
> where the old one left off. Otherwise, when you create a new shared index 
> (local index or index on view), you'll repeat the sequence value since it'd 
> start from 1 again.



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