[jira] [Commented] (CASSANDRA-6643) ALTER TYPE RENAME allows renaming to another keyspace

["Russ Hatch (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-6643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887350#comment-13887350 ] 

Russ Hatch commented on CASSANDRA-6643:
---------------------------------------

I'm working on dtests for user types, so I can add one for this scenario when we know what the behavior ought to be.

> ALTER TYPE RENAME allows renaming to another keyspace
> -----------------------------------------------------
>
>                 Key: CASSANDRA-6643
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6643
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: java version "1.7.0_51"
> cassandra from trunk, 4b54b8...
>            Reporter: Russ Hatch
>            Priority: Minor
>
> I'm not 100% certain this is a bug.
> The current syntax for "alter type rename" requires the keyspace on the old and new table name (if a keyspace is not active). So, to rename the type 'foo' to 'bar', you have to issue this statement:
> ALTER TYPE ks.foo rename to ks.bar .
> As a result, this syntax will also allow renaming the type into another existing keyspace, which updates the metadata in system.schema_usertypes.
> I'm wondering if perhaps we can omit the second keyspace prefix and implicitly rename into the same keyspace.
> To reproduce:
> {noformat}
> cqlsh> create keyspace user_types with replication = {'class':'SimpleStrategy', 'replication_factor':3} ;
> cqlsh> create keyspace user_types2 with replication = {'class':'SimpleStrategy', 'replication_factor':3} ;
> cqlsh> CREATE TYPE user_types.simple_type (user_number int);
> cqlsh> alter type user_types.simple_type rename to user_types2.simple_type;
> {noformat}
> Renaming to another keyspace is also possible when a keyspace is active, like so:
> {noformat}
> cqlsh:user_types> alter type simple_type rename to user_types2.simple_type;
> {noformat}



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