mapnik/mapnik — pull request #2001 by abonnasseau (2013-09-05 14:42:19+00:00)
Title: [mappy] Parallel feature requests supports - PostGIS async requests

It took me time, but i've rebased... The tests helped me a lot, because I would'nt have noticed the tricky composition of layers in case of early_return...
The new test coverage is great !