hadoop HA，两个namenode节点，其中备节点的zkfc启动不起来，查看logs，显示的错误如下
[root@masterbac logs]# tail hadoop-root-
java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.hadoop.ha.NodeFencer.createFenceMethod(NodeFencer.java:158)
... 7 more
2021-01-02 21:59:56,309 INFO org.apache.hadoop.ha.ActiveStandbyElector: Session connected.
2021-01-02 21:59:56,315 INFO org.apache.zookeeper.ZooKeeper: Session: 0x176c6018f320002 closed
2021-01-02 21:59:56,315 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down
[root@masterbac logs]# date
2021年 01月 02日 星期六 22:03:04 EST
请教大佬，有只有错误原因的吗，
[root@masterbac logs]# tail hadoop-root-
java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.hadoop.ha.NodeFencer.createFenceMethod(NodeFencer.java:158)
... 7 more
2021-01-02 21:59:56,309 INFO org.apache.hadoop.ha.ActiveStandbyElector: Session connected.
2021-01-02 21:59:56,315 INFO org.apache.zookeeper.ZooKeeper: Session: 0x176c6018f320002 closed
2021-01-02 21:59:56,315 INFO org.apache.zookeeper.ClientCnxn: EventThread shut down
[root@masterbac logs]# date
2021年 01月 02日 星期六 22:03:04 EST
请教大佬，有只有错误原因的吗，
