Major Description
Repro:
1) Enable dfs.permissions
2) Start HBaseMaster in a different linux user account from HDFS.
I get the following exception in the log. It looks like waitOnSafeMode requires HDFS superuser privileges which I do not grant to HBase.
2009-12-29 14:44:27,503 ERROR org.apache.hadoop.hbase.master.HMaster: Can not start master
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.apache.hadoop.hbase.master.HMaster.doMain(HMaster.java:1227)
at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:1268)
Caused by: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.security.AccessControlException: Superuser privilege is requ
ired
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkSuperuserPrivilege(FSNamesystem.java:4528)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.datanodeReport(FSNamesystem.java:3560)
at org.apache.hadoop.hdfs.server.namenode.NameNode.getDatanodeReport(NameNode.java:596)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
at org.apache.hadoop.ipc.Client.call(Client.java:739)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
at $Proxy0.getDatanodeReport(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy0.getDatanodeReport(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.datanodeReport(DFSClient.java:818)
at org.apache.hadoop.hdfs.DistributedFileSystem.getDataNodeStats(DistributedFileSystem.java:353)
at org.apache.hadoop.hbase.util.FSUtils.waitOnSafeMode(FSUtils.java:146)
at org.apache.hadoop.hbase.master.HMaster.<init>(HMaster.java:197)