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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9542) Create UDA does not recognize built-in functions without specifying system keyspace
Date Thu, 09 Jul 2015 12:26:04 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14620414#comment-14620414
] 

Aleksey Yeschenko commented on CASSANDRA-9542:
----------------------------------------------

I'm sorry to flip-flop about this, but I do now think that it shouldn't be allowed. UDAs should
be limited to only UDFs from their own KS, not even allowed to use {{system}} ones.

Allowing it doesn't go well with the upcoming schema code changes in a big way, plus it's
not very useful. Realistically, you can only really use them as final funcs. And you might
as well call {{SELECT intAsAblob(my_agg(...))}} and get the same result, if you really need
a conversion. It's probably cleaner that way too.

> Create UDA does not recognize built-in functions without specifying system keyspace
> -----------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-9542
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9542
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Zachary Kurey
>            Assignee: Robert Stupp
>            Priority: Minor
>             Fix For: 2.2.0 rc2
>
>         Attachments: 9542.txt
>
>
> I'd expect when creating a UDA not to have to specify the system keyspace when using
a built-in function for the state or final function.  For example:
> {code}
> CREATE AGGREGATE if not exists ks.my_agg(int) 
> SFUNC ks.adder
> STYPE int
> FINALFUNC intasblob
> ;
> {code}
> Gives me me the error:
> {quote}Final function ks.intasblob(int) does not exist or is not a scalar function{quote}
> Prefixing with 'system.' fixes the issue. But I was expecting it to resolve as if I were
using a built in function elsewhere.



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