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https://issues.apache.org/jira/browse/PHOENIX-6499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17657030#comment-17657030
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Tanuj Khurana commented on PHOENIX-6499:
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[~gourab.taparia] But don't the system table schemas change in a way that is
backward compatible ?
> Allow old client to connect to new server with higher major version than
> client
> -------------------------------------------------------------------------------
>
> Key: PHOENIX-6499
> URL: https://issues.apache.org/jira/browse/PHOENIX-6499
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Viraj Jasani
> Assignee: Gourab Taparia
> Priority: Major
>
> Although we do not allow old client with lower major version to connect to
> new server with higher major version, we should have this check based on
> System table schema. If there is no change in System tables schema b/ major
> versions of old client and new server (e.g 4.16 client and 5.1 server), we
> should let old client connect to new server.
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