https://community.cloudera.com/t5/Support-Questions/both-namenodes-are-standby-how-can-I-active-one-of-them/m-p/146345#M108912 <P>NAMENODE1</P><P>root. Superuser privilege is required 2016-10-24 11:25:52,065 INFO ha.EditLogTailer (EditLogTailer.java:triggerActiveLogRoll(271)) - Triggering log roll on remote NameNode hdpmaste r2/192.168.1.162:8020 2016-10-24 11:25:52,108 WARN ha.EditLogTailer (EditLogTailer.java:triggerActiveLogRoll(276)) - Unable to trigger a roll of the active NN org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.ipc.StandbyException): Operation category JOURNAL is not supported in state standby at org.apache.hadoop.hdfs.server.namenode.ha.StandbyState.checkOperation(StandbyState.java:87) at org.apache.hadoop.hdfs.server.namenode.NameNode$NameNodeHAContext.checkOperation(NameNode.java:1932) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:1313) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:6029) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:1219) at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:142) at org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:12025) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2206) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2202) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1709) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2200)</P><P> at org.apache.hadoop.ipc.Client.call(Client.java:1426) at org.apache.hadoop.ipc.Client.call(Client.java:1363) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy21.rollEditLog(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolTranslatorPB.rollEditLog(NamenodeProtocolTranslatorPB.java:148) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.triggerActiveLogRoll(EditLogTailer.java:273) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.access$600(EditLogTailer.java:61) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:315) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$200(EditLogTailer.java:284) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:301) at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:449) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:297) 2016-10-24 11:25:52,400 INFO ipc.Server (Server.java:logException(2287)) - IPC Server handler 19 on 8020, call org.apache.hadoop.ha.HAServiceProtocol.getServiceStatus from 192.168.1.161:35816 Call#4509 Retry#0: org.apache.hadoop.security.AccessControlException: Access denied for user root. Superuser privilege is required :.......................</P><P>rotocol.getServiceStatus from 192.168.1.161:35837 Call#4526 Retry#0: org.apache.hadoop.security.AccessControlException: Access denied for user root. Superuser privilege is required 2016-10-24 11:26:12,138 WARN namenode.FSEditLog (JournalSet.java:selectInputStreams(280)) - Unable to determine input streams from QJM to [192 .168.1.161:8485, 192.168.1.162:8485, 192.168.1.163:8485]. Skipping. java.io.IOException: Timed out waiting 20000ms for a quorum of nodes to respond. at org.apache.hadoop.hdfs.qjournal.client.AsyncLoggerSet.waitForWriteQuorum(AsyncLoggerSet.java:137) at org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager.selectInputStreams(QuorumJournalManager.java:471) at org.apache.hadoop.hdfs.server.namenode.JournalSet.selectInputStreams(JournalSet.java:278) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.selectInputStreams(FSEditLog.java:1507) at org.apache.hadoop.hdfs.server.namenode.FSEditLog.selectInputStreams(FSEditLog.java:1531) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer.doTailEdits(EditLogTailer.java:214) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.doWork(EditLogTailer.java:331) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.access$200(EditLogTailer.java:284) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread$1.run(EditLogTailer.java:301) at org.apache.hadoop.security.SecurityUtil.doAsLoginUserOrFatal(SecurityUtil.java:449) at org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:297)</P> Mon, 24 Oct 2016 17:38:02 GMT hassenseoud 2016-10-24T17:38:02Z