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https://issues.apache.org/jira/browse/CASSANDRA-9426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14658492#comment-14658492
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Blake Eggleston commented on CASSANDRA-9426:
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What about something like {code}... WITH EXTENSION anything = goes AND
EXTENSION something_else = {'a':'b', 'c': 'd'}{code}
I don't think you'd need to change the way they're stored in the schema table,
but this would make ddl statements easier to read/write when working with more
than one extension. It would also let you do alter statements on individual
extensions without having to include the entire extensions map.
Also, would this add hooks for validating the extension key value pairs?
> Provide a per-table text->text map for storing extra metadata
> -------------------------------------------------------------
>
> Key: CASSANDRA-9426
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9426
> Project: Cassandra
> Issue Type: Sub-task
> Reporter: Aleksey Yeschenko
> Assignee: Sam Tunnicliffe
> Labels: client-impacting
> Fix For: 3.0 beta 1
>
>
> For some applications that build on Cassandra it's important to be able to
> attach extra metadata to tables, and have it be distributed via regular
> Cassandra schema paths.
> I propose a new {{extensions map<text,text>}} table param for just that.
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