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https://issues.apache.org/jira/browse/CASSANDRA-9233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14510192#comment-14510192
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Aleksey Yeschenko commented on CASSANDRA-9233:
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This is actually very neat - both the code and how it works.
I wonder though if this should be built on virtual tables instead, with all the
variables in one table, and strictly typed (see CASSANDRA-7622).
> Allow system variables to be retrieved and set via CQL
> ------------------------------------------------------
>
> Key: CASSANDRA-9233
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9233
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jeff Jirsa
> Assignee: Jeff Jirsa
> Priority: Minor
> Attachments: 9233.txt
>
>
> Other database systems allow system variables to be retrieved and set via
> their query interface:
> https://dev.mysql.com/doc/refman/5.1/en/set-statement.html
> http://www.postgresql.org/docs/8.2/static/sql-set.html
> Proposing the following CQL syntax for retrieving variables:
> {{SHOW VARIABLES;}}
> {{SHOW VARIABLE 'variable';}}
> Proposing the following CQL syntax for setting variables:
> {{SET VARIABLE 'variable'='value' ;}}
> The output of {{SHOW VARIABLES;}} will be a superset of the actual values
> that can be set with {{SET VARIABLE}}, as not all values are safe to change
> after starting the node.
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