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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12373) 3.0 breaks CQL compatibility with super columns families
Date Tue, 25 Oct 2016 19:09:58 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15606191#comment-15606191
] 

Aleksey Yeschenko commented on CASSANDRA-12373:
-----------------------------------------------

bq. These columns are not persisted together with the rest of schema, they're completely virtual
and created during CFMetadata construction.

I do believe that in 2.1 we currently allow renaming these columns in CQL metadata. For users
that have switched from Thrift to CQL for their supercolumns and changed from the default
names, losing that metadata on upgrade might count as a breaking change.

> 3.0 breaks CQL compatibility with super columns families
> --------------------------------------------------------
>
>                 Key: CASSANDRA-12373
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12373
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL
>            Reporter: Sylvain Lebresne
>            Assignee: Alex Petrov
>             Fix For: 3.0.x, 3.x
>
>
> This is a follow-up to CASSANDRA-12335 to fix the CQL side of super column compatibility.
> The details and a proposed solution can be found in the comments of CASSANDRA-12335 but
the crux of the issue is that super column famillies show up differently in CQL in 3.0.x/3.x
compared to 2.x, hence breaking backward compatibilty.



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