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https://issues.apache.org/jira/browse/CASSANDRA-4416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13407988#comment-13407988
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Sylvain Lebresne commented on CASSANDRA-4416:
---------------------------------------------
I suppose we could artificially write them at startup. At each startup we could
erase everything (relating to the system keyspace) to be sure we don't have old
info and then dump the new info.
> Include metadata for system keyspace itself in schema_* tables
> --------------------------------------------------------------
>
> Key: CASSANDRA-4416
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4416
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.0.5
> Reporter: paul cannon
> Priority: Minor
> Labels: cql, cql3
> Fix For: 1.1.3
>
>
> The `system.schema_keyspaces`, `system.schema_columnfamilies`, and
> `system.schema_columns` virtual tables allow clients to query schema and
> layout information through CQL. This will be invaluable when users start to
> make more use of the CQL-only protocol (CASSANDRA-2478), since there will be
> no other way to determine certain information about available columnfamilies,
> keyspaces, or show metadata about them.
> However, the system keyspace itself, and all the columnfamilies in it, are
> not represented in the schema_* tables:
> {noformat}
> cqlsh> select * from system.schema_keyspaces where "keyspace" = 'system';
> cqlsh>
> cqlsh> select * from system.schema_columnfamilies where "keyspace" = 'system';
> cqlsh>
> cqlsh> select * from system.schema_columns where "keyspace" = 'system';
> cqlsh>
> {noformat}
> It would be greatly helpful to clients which do more introspection than the
> minimum (say, for example, cqlsh) to be able to get information on the
> structure and availability of schema-definition tables.
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