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https://issues.apache.org/jira/browse/CASSANDRA-13985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16243207#comment-16243207
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Blake Eggleston commented on CASSANDRA-13985:
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Here’s an initial implementation optionally add specific datacenters when
granting permissions: https://github.com/bdeggleston/cassandra/tree/13985
> Support restricting reads and writes to specific datacenters on a per user
> basis
> --------------------------------------------------------------------------------
>
> Key: CASSANDRA-13985
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13985
> Project: Cassandra
> Issue Type: Bug
> Reporter: Blake Eggleston
> Assignee: Blake Eggleston
> Priority: Minor
>
> There are a few use cases where it makes sense to restrict the operations a
> given user can perform in specific data centers. The obvious use case is the
> production/analytics datacenter configuration. You don’t want the production
> user to be reading/or writing to the analytics datacenter, and you don’t want
> the analytics user to be reading from the production datacenter.
> Although we expect users to get this right on that application level, we
> should also be able to enforce this at the database level. The first approach
> that comes to mind would be to support an optional DC parameter when granting
> select and modify permissions to roles. Something like {{GRANT SELECT ON
> some_keyspace TO that_user IN DC dc1}}, statements that omit the dc would
> implicitly be granting permission to all dcs. However, I’m not married to
> this approach.
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