[jira] [Commented] (CASSANDRA-10826) frozen<> added to non-frozen UDF/UDA argument types in schema metadata

["Michael Penick (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-10826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15045236#comment-15045236 ] 

Michael Penick commented on CASSANDRA-10826:
--------------------------------------------

I might have misunderstood the meaning of {{frozen<>}}, as it doesn't mean {{const}} or {{final}}. I think it means that it's an atomic piece of data that updated altogether. Regardless, it's still confusing that it's added implicitly to argument and return types of the above UDF.

> frozen<> added to non-frozen UDF/UDA argument types in schema metadata
> ----------------------------------------------------------------------
>
>                 Key: CASSANDRA-10826
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10826
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Michael Penick
>              Labels: client-impacting
>
> The function "avg_state" is created with a non-frozen tuple argument {{state}} and return type. It should be non-frozen because it's modified by the code in the body of the UDF.
> {code}
> CREATE KEYSPACE examples WITH replication = { 
>   'class': 'SimpleStrategy', 'replication_factor': '3' };
> CREATE FUNCTION examples.avg_state(state tuple<int, bigint>, val int)
>   CALLED ON NULL INPUT RETURNS tuple<int, bigint>
>   LANGUAGE java AS
>   'if (val != null) {
>     state.setInt(0, state.getInt(0) + 1);
>     state.setLong(1, state.getLong(1) + val.intValue());
>   }
> return state;'
> {code}
> However, the schema metadata has the both the {{state}} argument and the return type incorrectly defined as {{frozen<>}}:
> {code}
> cqlsh> SELECT argument_types, return_type FROM system_schema.functions WHERE keyspace_name = 'examples' AND function_name = 'avg_state';
>  argument_types                        | return_type
> ---------------------------------------+----------------------------
>  ['frozen<tuple<int, bigint>>', 'int'] | frozen<tuple<int, bigint>>
> {code}



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