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javax.servlet.ServletException: Principal not defined in configuration
javax.servlet.ServletException: javax.servlet.ServletException: Principal not defined in configuration at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.init(KerberosAuthenticationHandler.java:185) at org.apache.hadoop.security.authentication.server.AuthenticationFilter.init(AuthenticationFilter.java:146) at org.mortbay.jetty.servlet.FilterHolder.doStart(FilterHolder.java:97) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:713) at org.mortbay.jetty.servlet.Context.startContext(Context.java:140) at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1282) at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:518) at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:499) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152) at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130) at org.mortbay.jetty.Server.doStart(Server.java:224) at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50) at org.apache.hadoop.http.HttpServer.start(HttpServer.java:617) at org.apache.hadoop.hdfs.server.namenode.NameNodeHttpServer.start(NameNodeHttpServer.java:173) at org.apache.hadoop.hdfs.server.namenode.NameNode.startHttpServer(NameNode.java:529) at org.apache.hadoop.hdfs.server.namenode.NameNode.startCommonServices(NameNode.java:471) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:434) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:590) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:571) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1134) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1193)Caused by: javax.servlet.ServletException: Principal not defined in configuration at org.apache.hadoop.security.authentication.server.KerberosAuthenticationHandler.init(KerberosAuthenticationHandler.java:146) ... 24 more