hadoop2.2.0 HA启动时出现了两个standy的Namenode，没有出现active的Namenode

最新推荐文章于 2024-02-22 13:51:23 发布

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最新推荐文章于 2024-02-22 13:51:23 发布 · 6.8k 阅读

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在配置Hadoop 2.2.0高可用(HA)时遇到问题，启动后发现两个NameNode处于standby状态，未能激活active。通过jps命令检查进程，发现缺少DFSZKFailoverController（ZKFC）进程，这可能导致集群未正确启动。解决方法是使用stop-dfs.sh停止服务，然后重新运行start-dfs.sh启动。确保在实验HA设置时，NameNode和ZKFC进程都正常启动，以防止潜在问题。

2014-07-20 15:21:16,913 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:hadoop2 (auth:SIMPLE) cause:org.apache.hadoop.ipc.StandbyException: Operation category JOURNAL is not supported in state standby
2014-07-20 15:21:16,920 INFO org.apache.hadoop.ipc.Server: IPC Server handler 6 on 8020, call org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol.rollEditLog from 192.168.1.200:43177 Call#45 Retry#0: error: org.apache.hadoop.ipc.StandbyException: Operation category JOURNAL is not supported in state standby
2014-07-20 15:21:16,925 INFO org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Triggering log roll on remote NameNode slave01/192.168.1.200:8020
2014-07-20 15:21:17,041 WARN org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: 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$NameNodeHAContext.checkOperation(NameNode.java:1496)
   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkOperation(FSNamesystem.java:1030)
   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:5042)
   at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:832)
   at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:139)
   at org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:11214)
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