bq. found some regions of other tables in transition, not of this table. That can explain why "balancer" command returned false. Are those regions stuck in transition ?
Cheers On Tue, Apr 15, 2014 at 10:47 PM, Tao Xiao <xiaotao.cs....@gmail.com> wrote: > The command "balance_switch true" returns true, but the command "balancer" > returns false. I checked the HMaster UI and found some regions of other > tables in transition, not of this table. > > This table's name is E_MP_DAY_READ, I did grep it in the master log and > found only the following lines: > > 2014-04-15 15:50:59,925 INFO [MASTER_SERVER_OPERATIONS-b03:60000-1] > handler.ServerShutdownHandler: Skip assigning region > > E_MP_DAY_READ,160001123745_2014-01-25:00:00:00,1395753408476.ba5c8291f8dad37d5b9621b7334c17b0. > because it has been opened in a04.jsepc.com,60020,1397548219084 > 2014-04-15 15:50:59,926 INFO [MASTER_SERVER_OPERATIONS-b03:60000-1] > handler.ServerShutdownHandler: Skip assigning region > > E_MP_DAY_READ,300007915618_2014-03-13:00:00:00,1395994146202.ec4e397baffd1cc40bdc18ce0ab2f28a. > because it has been opened in a04.jsepc.com,60020,1397548219084 > 2014-04-15 15:50:59,926 INFO [MASTER_SERVER_OPERATIONS-b03:60000-1] > handler.ServerShutdownHandler: Skip assigning region > > E_MP_DAY_READ,300013608840_2014-02-21:00:00:00,1395749573711.744bab52befec279a7ee97497801e10f. > because it has been opened in a04.jsepc.com,60020,1397548219084 > 2014-04-15 15:50:59,937 INFO [MASTER_SERVER_OPERATIONS-b03:60000-2] > handler.ServerShutdownHandler: Skip assigning region > > E_MP_DAY_READ,300000497780_2014-01-23:00:00:00,1395746363941.79b831e698053b1005f7a97c9f2a6ddc. > because it has been opened in a04.jsepc.com,60020,1397548219084 > 2014-04-15 15:50:59,938 INFO [MASTER_SERVER_OPERATIONS-b03:60000-2] > handler.ServerShutdownHandler: Skip assigning region > > E_MP_DAY_READ,300008188567_2014-03-04:00:00:00,1395756104426.eb1806c2dc5833152b6b5e7b5e4a88b8. > because it has been opened in a04.jsepc.com,60020,1397548219084 > 2014-04-15 15:50:59,940 INFO [MASTER_SERVER_OPERATIONS-b03:60000-2] > handler.ServerShutdownHandler: Skip assigning region > > E_MP_DAY_READ,300016987143_2014-01-21:00:00:00,1395986789897.e4d143865d354bdc2a427c1f00df6ad7. > because it has been opened in a04.jsepc.com,60020,1397548219084 > > so few logging lines about it, looks strange ? > > > BTW, I can spread the regions of this table evenly across the whole cluster > after I shutdown the two region servers where the regions of this table > resided originally. > > > 2014-04-15 19:47 GMT+08:00 Ted Yu <yuzhih...@gmail.com>: > > > Is load balancer enabled ? > > > > Can you grep this table in master log and pastebin what you found ? > > > > Cheers > > > > On Apr 15, 2014, at 4:40 AM, Tao Xiao <xiaotao.cs....@gmail.com> wrote: > > > > > I am using HDP 2.0.6, which has 18 nodes(region servers). One of my > HBase > > > tables has 50 regions but I found that the 50 regions all stay in just > > two > > > nodes, not spread evenly in the 18 nodes. I did not pre-create splits > so > > > this table was gradually split into 50 regions itself. > > > > > > I'd like to know why all the regions stay in just two nodes, not the 18 > > > nodes of the cluster, and how to spread the regions evenly across all > the > > > region servers. Thanks. > > >
