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https://issues.apache.org/jira/browse/CASSANDRA-19615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marcus Eriksson updated CASSANDRA-19615:
----------------------------------------
    Source Control Link: 
https://github.com/apache/cassandra/commit/4d29a1c75e4c7a5493d5601c7a907b75e042c5f9
             Resolution: Fixed
                 Status: Resolved  (was: Ready to Commit)

and committed with the comment fixed

> Merge pre-existing schema with the system defined one during upgrade
> --------------------------------------------------------------------
>
>                 Key: CASSANDRA-19615
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-19615
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Transactional Cluster Metadata
>            Reporter: Marcus Eriksson
>            Assignee: Marcus Eriksson
>            Priority: Normal
>             Fix For: 5.1-alpha1
>
>         Attachments: ci_summary.html
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> When upgrading we should merge the pre-existing schema with the 
> system-defined schema. For example, if a table was defined in 5.0 in 
> system_distributed, but then removed from SystemDistributedKeyspace.java in 
> 5.1 we should still be able to read it (until manually dropped).



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