[jira] [Created] (CASSANDRA-9457) Empty INITCOND treated as null in aggregate

["Olivier Michallat (JIRA)" <ji...@apache.org>]

Olivier Michallat created CASSANDRA-9457:
--------------------------------------------

             Summary: Empty INITCOND treated as null in aggregate
                 Key: CASSANDRA-9457
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9457
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Olivier Michallat
            Assignee: Robert Stupp
            Priority: Minor


Given the following test data:
{code}
cqlsh:test> create table foo(k int, v int, primary key(k,v));
cqlsh:test> insert into foo(k,v) values(1,1);
cqlsh:test> insert into foo(k,v) values(1,2);
cqlsh:test> insert into foo(k,v) values(1,3);
{code}
And the following aggregate definition:
{code}
cqlsh:test> CREATE FUNCTION cat(s text, v int)
            RETURNS NULL ON NULL INPUT
            RETURNS text 
            LANGUAGE java
            AS 'return s + v;';
cqlsh:test> CREATE AGGREGATE cats(int) SFUNC cat STYPE text INITCOND '';
{code}
The following should return '123', but it returns null:
{code}
cqlsh:test> select cats(v) from foo where k = 1;

 test.cats(v)
---------------
{code}
The empty INITCOND is treated as null, and the SFUNC is never called.



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