Doing it from the master is what we aim to do, but it's a lot more involved. I know that jgray has a few ideas on the subject.
J-D On Thu, Jan 27, 2011 at 4:25 PM, Ted Dunning <tdunn...@maprtech.com> wrote: > Why doesn't the master do this? Why not just set it up so that you can tell > the master that the maximum number of regions for the soon-to-go region > server is 0? > > On Thu, Jan 27, 2011 at 3:53 PM, Jean-Daniel Cryans > <jdcry...@apache.org>wrote: > >> Writing this gives me an idea... I think one "easy" way we could >> achieve this region draining problem is by writing a jruby script >> that: >> >> 1- Retrieves the list of regions served by a RS >> 2- Disables master balancing >> 3- Moves one by one every region out of the RS, assigning them to the >> other RSs in a round-robin fashion >> 4- Shuts down the RS >> 5- Reenables master balancing >> >> I wonder if it would work... At least it's a process that you could >> stop at any time without breaking everything. >> >
