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From "Dinesh Joshi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-7622) Implement virtual tables
Date Wed, 04 Apr 2018 06:30:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16425076#comment-16425076
] 

Dinesh Joshi commented on CASSANDRA-7622:
-----------------------------------------

[~cnlwsu], I spent some time looking at the patch. My initial thoughts on the implementation
are that we should probably have a separate {{VirtualKeyspace}} like we have a {{SystemKeyspace}}.
This will allow us to isolate / namespace {{VirtualTables}}. We can always change this if
needed. One of the advantage, I think, is that this keyspace can become available for serving
sooner (we would ofcourse need to change the bootstrap for this to work). If we're exposing
metrics or other internal state then this would be very helpful. What do you think?

> Implement virtual tables
> ------------------------
>
>                 Key: CASSANDRA-7622
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7622
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: CQL
>            Reporter: Tupshin Harper
>            Assignee: Chris Lohfink
>            Priority: Major
>             Fix For: 4.x
>
>
> There are a variety of reasons to want virtual tables, which would be any table that
would be backed by an API, rather than data explicitly managed and stored as sstables.
> One possible use case would be to expose JMX data through CQL as a resurrection of CASSANDRA-3527.
> Another is a more general framework to implement the ability to expose yaml configuration
information. So it would be an alternate approach to CASSANDRA-7370.
> A possible implementation would be in terms of CASSANDRA-7443, but I am not presupposing.



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