gem/oq-engine — pull request #1174 by micheles (2013-05-09 12:46:51+00:00)
Title: Parallelize insert into gmf agg

See https://bugs.launchpad.net/oq-engine/+bug/1178054. By parallelizing the INSERT query I got a speedup of 5 times on Cobain. Notice that the implementation uses a simple map_reduce utility. Actually there is a similar utility in our code base (called distribute)
but it is never used excepts in its tests so I assume it is experimental code. Should we remove it?