在CM添加组件是遇到如下错误：
发生服务器错误。将以下信息发送至 Cloudera。
路径: http://10.0.41.131:7180/cmf/clusters/1/add-service/roleAssignments
版本: Cloudera Express 5.7.0 (#76 built by jenkins on 20160401-1334 git: ec0e7e69444280aa311511998bd83e8e6572f61c)
java.lang.NullPointerException:
at RulesCluster.java line 378
in com.cloudera.server.cmf.cluster.RulesCluster createServicesIfNeeded()
堆栈踪迹:
RulesCluster.java line 378
in com.cloudera.server.cmf.cluster.RulesCluster createServicesIfNeeded()
RulesCluster.java line 258
in com.cloudera.server.cmf.cluster.RulesCluster doRoleAssignment()
RulesCluster.java line 347
in com.cloudera.server.cmf.cluster.RulesCluster computeServiceRoleHostMap()
AddServiceWizardController2.java line 338
in com.cloudera.server.web.cmf.wizard.service.AddServiceWizardController2 buildRoleAssignmentsData()
AddServiceWizardController2.java line 272
in com.cloudera.server.web.cmf.wizard.service.AddServiceWizardController2 renderAssignmentsStep()
<generated> line -1
in com.cloudera.server.web.cmf.wizard.service.AddServiceWizardController2$$FastClassByCGLIB$$d99fd210 invoke()
MethodProxy.java line 191
in net.sf.cglib.proxy.MethodProxy invoke()
Cglib2AopProxy.java line 688
in org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation invokeJoinpoint()
ReflectiveMethodInvocation.java line 150
in org.springframework.aop.framework.ReflectiveMethodInvocation proceed()
MethodSecurityInterceptor.java line 61
in org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor invoke()
ReflectiveMethodInvocation.java line 172
in org.springframework.aop.framework.ReflectiveMethodInvocation proceed()
Cglib2AopProxy.java line 621
in org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor intercept()
<generated> line -1
in com.cloudera.server.web.cmf.wizard.service.AddServiceWizardController2$$EnhancerByCGLIB$$616646d0 renderAssignmentsStep()
NativeMethodAccessorImpl.java line -2
in sun.reflect.NativeMethodAccessorImpl invoke0()
NativeMethodAccessorImpl.java line 57
in sun.reflect.NativeMethodAccessorImpl invoke()
DelegatingMethodAccessorImpl.java line 43
in sun.reflect.DelegatingMethodAccessorImpl invoke()
Method.java line 606
in java.lang.reflect.Method invoke()
HandlerMethodInvoker.java line 176
in org.springframework.web.bind.annotation.support.HandlerMethodInvoker invokeHandlerMethod()
AnnotationMethodHandlerAdapter.java line 436
in org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter invokeHandlerMethod()
AnnotationMethodHandlerAdapter.java line 424
in org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter handle()
DispatcherServlet.java line 790
in org.springframework.web.servlet.DispatcherServlet doDispatch()
DispatcherServlet.java line 719
in org.springframework.web.servlet.DispatcherServlet doService()
FrameworkServlet.java line 669
in org.springframework.web.servlet.FrameworkServlet processRequest()
FrameworkServlet.java line 574
in org.springframework.web.servlet.FrameworkServlet doGet()
HttpServlet.java line 707
in javax.servlet.http.HttpServlet service()
HttpServlet.java line 820
in javax.servlet.http.HttpServlet service()
ServletHolder.java line 511
in org.mortbay.jetty.servlet.ServletHolder handle()
ServletHandler.java line 1221
in org.mortbay.jetty.servlet.ServletHandler$CachedChain doFilter()
UserAgentFilter.java line 78
in org.mortbay.servlet.UserAgentFilter doFilter()
GzipFilter.java line 131
in org.mortbay.servlet.GzipFilter doFilter()
ServletHandler.java line 1212
in org.mortbay.jetty.servlet.ServletHandler$CachedChain doFilter()
JAMonServletFilter.java line 48
in com.jamonapi.http.JAMonServletFilter doFilter()
ServletHandler.java line 1212
in org.mortbay.jetty.servlet.ServletHandler$CachedChain doFilter()
JavaMelodyFacade.java line 109
in com.cloudera.enterprise.JavaMelodyFacade$MonitoringFilter doFilter()
ServletHandler.java line 1212
in org.mortbay.jetty.servlet.ServletHandler$CachedChain doFilter()
FilterChainProxy.java line 311
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
FilterSecurityInterceptor.java line 116
in org.springframework.security.web.access.intercept.FilterSecurityInterceptor invoke()
FilterSecurityInterceptor.java line 83
in org.springframework.security.web.access.intercept.FilterSecurityInterceptor doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
ExceptionTranslationFilter.java line 113
in org.springframework.security.web.access.ExceptionTranslationFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
SessionManagementFilter.java line 101
in org.springframework.security.web.session.SessionManagementFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
AnonymousAuthenticationFilter.java line 113
in org.springframework.security.web.authentication.AnonymousAuthenticationFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
RememberMeAuthenticationFilter.java line 139
in org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
SecurityContextHolderAwareRequestFilter.java line 54
in org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
RequestCacheAwareFilter.java line 45
in org.springframework.security.web.savedrequest.RequestCacheAwareFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
AbstractAuthenticationProcessingFilter.java line 182
in org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
LogoutFilter.java line 105
in org.springframework.security.web.authentication.logout.LogoutFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
SecurityContextPersistenceFilter.java line 87
in org.springframework.security.web.context.SecurityContextPersistenceFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
ConcurrentSessionFilter.java line 125
in org.springframework.security.web.session.ConcurrentSessionFilter doFilter()
FilterChainProxy.java line 323
in org.springframework.security.web.FilterChainProxy$VirtualFilterChain doFilter()
FilterChainProxy.java line 173
in org.springframework.security.web.FilterChainProxy doFilter()
DelegatingFilterProxy.java line 237
in org.springframework.web.filter.DelegatingFilterProxy invokeDelegate()
DelegatingFilterProxy.java line 167
in org.springframework.web.filter.DelegatingFilterProxy doFilter()
ServletHandler.java line 1212
in org.mortbay.jetty.servlet.ServletHandler$CachedChain doFilter()
CharacterEncodingFilter.java line 88
in org.springframework.web.filter.CharacterEncodingFilter doFilterInternal()
OncePerRequestFilter.java line 76
in org.springframework.web.filter.OncePerRequestFilter doFilter()
ServletHandler.java line 1212
in org.mortbay.jetty.servlet.ServletHandler$CachedChain doFilter()
ServletHandler.java line 399
in org.mortbay.jetty.servlet.ServletHandler handle()
SecurityHandler.java line 216
in org.mortbay.jetty.security.SecurityHandler handle()
SessionHandler.java line 182
in org.mortbay.jetty.servlet.SessionHandler handle()
SecurityHandler.java line 216
in org.mortbay.jetty.security.SecurityHandler handle()
ContextHandler.java line 767
in org.mortbay.jetty.handler.ContextHandler handle()
WebAppContext.java line 450
in org.mortbay.jetty.webapp.WebAppContext handle()
HandlerWrapper.java line 152
in org.mortbay.jetty.handler.HandlerWrapper handle()
StatisticsHandler.java line 53
in org.mortbay.jetty.handler.StatisticsHandler handle()
HandlerWrapper.java line 152
in org.mortbay.jetty.handler.HandlerWrapper handle()
Server.java line 326
in org.mortbay.jetty.Server handle()
HttpConnection.java line 542
in org.mortbay.jetty.HttpConnection handleRequest()
HttpConnection.java line 928
in org.mortbay.jetty.HttpConnection$RequestHandler headerComplete()
HttpParser.java line 549
in org.mortbay.jetty.HttpParser parseNext()
HttpParser.java line 212
in org.mortbay.jetty.HttpParser parseAvailable()
HttpConnection.java line 404
in org.mortbay.jetty.HttpConnection handle()
SelectChannelEndPoint.java line 410
in org.mortbay.io.nio.SelectChannelEndPoint run()
QueuedThreadPool.java line 582
in org.mortbay.thread.QueuedThreadPool$PoolThread run()
解决办法：
更换浏览器
或者
清空当前浏览器的缓存