[jira] [Issue Comment Deleted] (CASSANDRA-7622) Implement virtual tables

["Nate McCall (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-7622?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nate McCall updated CASSANDRA-7622:
-----------------------------------
    Comment: was deleted

(was: 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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