Load balancing only uses number of regions as the load metric, there is no other concept of load, yet.
That's a target for the next iteration of load balancing but outside the scope of the current work being done. JG > -----Original Message----- > From: Ted Yu [mailto:yuzhih...@gmail.com] > Sent: Sunday, July 25, 2010 3:50 PM > To: dev@hbase.apache.org > Subject: Re: Review Request: First cut at a working load balancer > > Looking at https://issues.apache.org/jira/browse/HBASE-2697, I found > another > review request: http://review.hbase.org/r/382/#review476 which is > related to > HBASE-2692 > I am not sure whether I should comment about load balancing in HBASE- > 2697 > > On Sun, Jul 25, 2010 at 1:31 PM, Ted Yu <yuzhih...@gmail.com> wrote: > > > Jonathan: > > Can you elaborate on how the following information (input > tobalanceCluster) > > is gathered ? > > > > Map<HServerInfo,List<HRegionInfo>> serverInfo > > > > Considering the implication from HBASE-2473, some (pre-created) > regions may > > stay empty for some time. Would those regions be included in the > above Map ? > > > > Thanks > > > > > > On Wed, Jul 7, 2010 at 4:48 PM, Jonathan Gray <jg...@apache.org> > wrote: > > > >> > >> ----------------------------------------------------------- > >> This is an automatically generated e-mail. To reply, visit: > >> http://review.hbase.org/r/282/ > >> ----------------------------------------------------------- > >> > >> Review request for hbase. > >> > >> > >> Summary > >> ------- > >> > >> Just putting this up to show people. It's not done but the > >> balanceCluster() method "works" and has a bunch of test cases. > >> > >> > >> This addresses bug HBASE-2697. > >> http://issues.apache.org/jira/browse/HBASE-2697 > >> > >> > >> Diffs > >> ----- > >> > >> > branches/0.90_master_rewrite/src/main/java/org/apache/hadoop/hbase/HSer > verInfo.java > >> 961064 > >> > branches/0.90_master_rewrite/src/main/java/org/apache/hadoop/hbase/mast > er/LoadBalancer.java > >> PRE-CREATION > >> > branches/0.90_master_rewrite/src/test/java/org/apache/hadoop/hbase/mast > er/TestLoadBalancer.java > >> PRE-CREATION > >> > >> Diff: http://review.hbase.org/r/282/diff > >> > >> > >> Testing > >> ------- > >> > >> Added TestLoadBalancer.testLoadBalancer_balanceCluster(). If you > have any > >> good edge cases let me know! > >> > >> > >> Thanks, > >> > >> Jonathan > >> > >> > >
