madlib/madlib — pull request #209 by aojwang (2012-08-21 06:33:49+00:00)
Title: Training function will be failed when the result tree table is under default schema.

JIRA: MADLIB-640.
The scenario is, that we create the table 'car_tree' and then call get_schema_name function to retrieve the schema of that table from pg_namespace. As this function (get_schema_name) is stable, it just return null. The solution is change it to VOLATILE.