The picture is not very clear. I don't see E_MP_DAY_READ having regions in transition.
Anyway, as long as there is region in transition, balancer would not run. Cheers On Wed, Apr 16, 2014 at 5:52 PM, Tao Xiao <xiaotao.cs....@gmail.com> wrote: > Ted, > > I can see some regions of other tables in transition now , but I'm not sure > how long have them been in transition and I will check the HBase master UI > later. Here is the > screenshot< > http://picpaste.com/Regions_in_Transition_-_2014-04-17_08-38-qyf5anz8.png > >. > From the screenshot, there is a region with state of FAILED_OPEN, which is > in red, and there are 9 regions in transition for more than 60 seconds. > > Note that the table whose regions all stay in 2 nodes is E_MP_DAY_READ, > while the other tables shown in the screenshot are named as > E_MP_DAY_READ_20140315, E_MP_DAY_READ_20140322, E_MP_DAY_READ_20140324, and > so on. > > Thanks. > > > 2014-04-16 23:10 GMT+08:00 Ted Yu <yuzhih...@gmail.com>: > > > 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. > > > > > > > > > >
