[CASSANDRA-9457] Empty INITCOND treated as null in aggregate

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.2.0 rc1
• Severity: Low
• Assignee: Robert Stupp
• Reporter: Olivier Michallat

Authors

Robert Stupp

Reviewers

Sylvain Lebresne

• Created: 22/May/15 14:12
• Updated: 16/Apr/19 09:31
• Resolved: 04/Jun/15 14:03

Description

Given the following test data:

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);

And the following aggregate definition:

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 '';

The following should return '123', but it returns null:

cqlsh:test> select cats(v) from foo where k = 1;

 test.cats(v)
---------------

The empty INITCOND is treated as null, and the SFUNC is never called.

Issue Links

• links to: Git branch