Joe: Take a look at hbase-3779 I linked my blog to hbase-3609 which reflects most recent development.
Cheers On Friday, April 15, 2011, Joe Pallas <[email protected]> wrote: > > On Apr 15, 2011, at 3:22 PM, Stack wrote: > >>> The HBase rebalancer, as I understand it, adjusts region assignments, but >>> doesn't adjust split points (hence, the number of regions). Maybe that >>> would be a useful feature for some cases. >>> >> >> What would you suggest Joe? It currently splits regions down the >> middle. You'd instead have a split point that split the requests >> happening on a region over say, the last five or ten minutes? > > I thought the rebalancer was only moving regions among servers, not actively > doing splits. I guess I was mistaken. > > In any case, there could be either a heuristic or a hint from the table > description to handle cases where distribution should be favored (split > regions to distribute evenly across region servers), because the keyspace is > sparsely occupied but updates are uniformly distributed and it's desirable to > distribute the update load. > > Bear in mind, I'm just speculating—I don't have experience yet with a > reasonably sized workload. > > joe > >
