Can you check master log and see whats happening around -ROOT-? Why is it not being assigned out? What if you kill master process and restart it? Does -ROOT- get assigned then?
St.Ack On Wed, Mar 30, 2011 at 7:21 AM, Nichole Treadway <[email protected]> wrote: > Hi all, > > This morning I was restarting my HBase cluster, and I'm finding that the > region servers start up fine, but master always fails with the following > error shown in the web ui: > > Problem accessing /master.jsp. Reason: > > Trying to contact region server null for region , row '', but > failed after 10 attempts. > Exceptions: > java.io.IOException: HRegionInfo was null or empty in -ROOT-, > row=keyvalues={.META.,,1/info:server/1301428760725/Put/vlen=33, > .META.,,1/info:serverstartcode/1301428760725/Put/vlen=8} > java.io.IOException: HRegionInfo was null or empty in -ROOT-, > row=keyvalues={.META.,,1/info:server/1301428760725/Put/vlen=33, > .META.,,1/info:serverstartcode/1301428760725/Put/vlen=8} > ... > > Caused by: > > > org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to > contact region server null for region , row '', but failed after 10 > attempts. > Exceptions: > java.io.IOException: HRegionInfo was null or empty in -ROOT-, > row=keyvalues={.META.,,1/info:server/1301428760725/Put/vlen=33, > .META.,,1/info:serverstartcode/1301428760725/Put/vlen=8} > java.io.IOException: HRegionInfo was null or empty in -ROOT-, > row=keyvalues={.META.,,1/info:server/1301428760725/Put/vlen=33, > .META.,,1/info:serverstartcode/1301428760725/Put/vlen=8} > > > ... > > Here is what I get when I scan -ROOT-: > > > hbase(main):001:0> scan '-ROOT-' > ROW COLUMN+CELL > .META.,,1 column=info:server, > timestamp=1301428760725, value=sspv2rndhadoop1.gce2000.com:60020 > .META.,,1 column=info:serverstartcode, > timestamp=1301428760725, value=1301428748891 > > > > Any ideas what's going on / how I can fix this? > > > Cluster info: 4 nodes, hadoop-0.20-append, hbase-0.90.3, red hat 5.5, > 64-bit, jdk1.6; 64 gb ram, 2.8ghz. > > > Thanks guys >
