ERROR: org.apache.hadoop.hbase.client.NoServerForRegionException
1、Hbase集群所有异常宕机之后，启动完Hadoop->Zookeeper->Hbase
2、在查看表的时候出现报错
3、查看lHbase的log日志，发现dfs是安全模式
4、查看dfs模式，果然是安全模式
5、关闭dfs安全模式
6、再次启动Hbase，能正常启动
2、在查看表的时候出现报错
-
hbase(main):001:0> scan 'mytab'
-
ROW COLUMN+CELL
-
15/09/11 15:16:08 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
15/09/11 15:17:10 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
15/09/11 15:18:12 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
15/09/11 15:19:14 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
15/09/11 15:20:17 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
15/09/11 15:21:21 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
15/09/11 15:22:26 INFO ipc.HBaseRPC: Problem connecting to server: slave3/10.10.10.73:60020
-
- ERROR: org.apache.hadoop.hbase.client.NoServerForRegionException: Unable to find region for mytab,,99999999999999 after 7 tries.
-
2015-09-11 15:28:09,429 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
-
2015-09-11 15:28:19,433 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
-
2015-09-11 15:28:29,458 INFO org.apache.hadoop.hbase.util.FSUtils: Waiting for dfs to exit safe mode...
-
2015-09-11 15:28:29,540 INFO org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation: getMaster attempt 23 of 140 failed; retrying after sleep of 64134
- org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hbase.ipc.ServerNotRunningYetException: Server is not running yet
-
grid@master1:~$ hadoop dfsadmin -safemode get
- Safe mode is ON
-
grid@master1:~$ hadoop dfsadmin -safemode leave
- Safe mode is OFF
-
grid@master1:~$ start-hbase.sh
-
starting master, logging to /usr/local/hbase/logs/hbase-grid-master-master1.out
-
slave1: starting regionserver, logging to /usr/local/hbase/bin/../logs/hbase-grid-regionserver-slave1.out
-
slave2: starting regionserver, logging to /usr/local/hbase/bin/../logs/hbase-grid-regionserver-slave2.out
-
slave3: starting regionserver, logging to /usr/local/hbase/bin/../logs/hbase-grid-regionserver-slave3.out
-
grid@master1:~$ jps
-
1719 QuorumPeerMain
-
4069 HMaster
-
1473 SecondaryNameNode
-
1556 JobTracker
-
1283 NameNode
- 4244 Jps
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