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https://issues.apache.org/jira/browse/CASSANDRA-7622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396185#comment-16396185
 ] 

ASF GitHub Bot commented on CASSANDRA-7622:
-------------------------------------------

Github user zznate commented on a diff in the pull request:

    https://github.com/apache/cassandra/pull/205#discussion_r173966104
  
    --- Diff: src/java/org/apache/cassandra/schema/TableMetadata.java ---
    @@ -141,6 +147,15 @@ private TableMetadata(Builder builder)
             params = builder.params.build();
             isView = builder.isView;
     
    +        isVirtual = builder.isVirtual;
    +        if (isVirtual)
    +            virtualKlass = builder.virtualKlass;
    +        else
    +            virtualKlass = null;
    +
    +        assert isVirtual == flags.contains(Flag.VIRTUAL) || 
!Strings.isNullOrEmpty(virtualKlass) && !flags.contains(Flag.VIRTUAL)
    --- End diff --
    
    Same as above w. the asserts. Let's just draw a line in the sand and stop 
doing this. 


> Implement virtual tables
> ------------------------
>
>                 Key: CASSANDRA-7622
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7622
>             Project: Cassandra
>          Issue Type: Improvement
>            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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