You mean like this: hbase@c1-m02:/usr/lib/hbase-0.90.0/bin$ ./stop-hbase.sh stopping hbase...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Still going..... :( On Tue, Apr 12, 2011 at 12:01 PM, Jinsong Hu <jinsong...@hotmail.com> wrote: > You probably should stop all master/regionservers, then start one master, > tail -f the log to confirm all the hlogs are handled, > > then start the first regionserver, and then other regionservers. > > I have encountered this issues before. > hbase is not as good as what you want, but not as bad as you say either. The > truth is in between. > > Jimmy > > -------------------------------------------------- > From: "Robert Gonzalez" <g...@maxpointinteractive.com> > Sent: Tuesday, April 12, 2011 9:49 AM > To: <user@hbase.apache.org> > Subject: HBase is not ready for Primetime > >> We've been using HBase for about a year, consistenly running into >> problems where we lost data. After reading forums and some back and >> forth with other Hbase users, we changed our data methodology to save >> less data per row. This last time, we upgraded to 0.90 at the >> recommendation of the hbase community, cleared off all our data, and >> started over. Seemed to be running ok for a couple of months, until >> this morning. One of the regionservers stopped responding to data >> requests and we tried to restart it to no avail. Then we shutdown our >> processes so that nothing was using HBase and we shut down HBase and >> brought it back up. We waited a little bit, until hbase status >> indicated that all the servers were back up. We turned on our >> processes and lo and behold, HBase is broken, getting >> org.apache.hadoop.hbase. >> NotServingRegionException: >> org.apache.hadoop.hbase.NotServingRegionException: Region is not >> online: -ROOT-,,0 >> at >> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2319) >> at >> org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1607) >> at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source) >> at >> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) >> at java.lang.reflect.Method.invoke(Method.java:597) >> at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:570) >> at >> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1036) >> >> And now we can't even shut it down. >> >> Seems that Hbase is just too flaky to depend on for a serious system, >> we've not had this type of problem to this degree with conventional DB >> systems. Now that we are not saving that much data (we are using large >> hdfs files for that) in Hbase, we are probably going to move back to a >> conventional SQL system for our control data. We just can't afford to >> be constantly fighting problems like this. >> >> >> -- >> >> Robert Gonzalez >> >> Maxpoint Interactive >> > -- Robert Gonzalez / Senior Software Architect 7600 Burnet Road, Suite 500 Austin, TX 78757 T 512 981 9561 F 919 882 8529 g...@maxpointinteractive.com
