Hi.
I have a cluster with where each node can run up to 8 map tasks (one task per core), now we realized that we need to run another type of job that has much larger memory requirements, which will only allow up to 4 tasks to be run on each node. Is it possible to somehow specify that each map process of that new task "occupies" two map slots so that at most 4 such maps will be launched? Another option is of course to change map.tasks.maximum to 4 and rewrite all old tasks to run couple of threads, but if there's better solution I'd highly appreciate any advice!
