Pushdown LIMIT in cross product joins

Pushdown LIMIT clause in cross product joins. Queries of form

SELECT t1.a FROM t1, t2 LIMIT 10

Produce a plan like this:

LIMIT 10

CROSS JOIN

Access: SELECT t1.a FROM t1 LIMIT 10

Access: SELECT 1 FROM t2 LIMIT 10

See https://community.jboss.org/thread/220834?tstart=0 for a little more detail