Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 62E09200B17 for ; Mon, 6 Jun 2016 20:38:23 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 613A6160A24; Mon, 6 Jun 2016 18:38:23 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 33993160A56 for ; Mon, 6 Jun 2016 20:38:22 +0200 (CEST) Received: (qmail 79204 invoked by uid 500); 6 Jun 2016 18:38:21 -0000 Mailing-List: contact issues-help@ambari.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@ambari.apache.org Delivered-To: mailing list issues@ambari.apache.org Received: (qmail 79180 invoked by uid 99); 6 Jun 2016 18:38:21 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 06 Jun 2016 18:38:21 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 40B032C1F54 for ; Mon, 6 Jun 2016 18:38:21 +0000 (UTC) Date: Mon, 6 Jun 2016 18:38:21 +0000 (UTC) From: "Aravindan Vijayan (JIRA)" To: issues@ambari.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (AMBARI-17033) Metrics call from applications deployed by Ambari Slider View return exception MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Mon, 06 Jun 2016 18:38:23 -0000 [ https://issues.apache.org/jira/browse/AMBARI-17033?page=3Dcom.atlass= ian.jira.plugin.system.issuetabpanels:all-tabpanel ] Aravindan Vijayan updated AMBARI-17033: --------------------------------------- Labels: (was: ambari-metrics) > Metrics call from applications deployed by Ambari Slider View return exce= ption > -------------------------------------------------------------------------= ----- > > Key: AMBARI-17033 > URL: https://issues.apache.org/jira/browse/AMBARI-17033 > Project: Ambari > Issue Type: Bug > Components: ambari-metrics > Affects Versions: 2.4.0 > Reporter: thomas liu > Assignee: Aravindan Vijayan > Fix For: 2.4.0 > > > Thanks for your attention. > Currently, I deployed an application through Ambari Slider View with met= rics enabled. > However, the metric graphs are not showing up on the page. > Using Chrome network tab to debug the metrics API calls, the response loo= ks like: > { > "href" : "http://[ambari-server-host]:8080/api/v1/views/SLIDER/versions= /2.0.0/instances/test/apps/1463...", > "id" : "1463003744042_207", > "instance_name" : "test", > "version" : "2.0.0", > "view_name" : "SLIDER" > } > So I read the ambari-server.log, and found those related exceptions: > {noformat} > 03 Jun 2016 10:35:37,006 WARN [qtp-ambari-client-8928] ServletHandler:56= 3 - /api/v1/views/SLIDER/versions/2.0.0/instances/test/apps/1464907776624_1= 9 > java.lang.RuntimeException: Unable to serialize to json: org.codehaus.jac= kson.JsonGenerationException: Can not write a field name, expecting a value > at org.apache.ambari.server.api.services.serializers.JsonSerializer.seria= lize(JsonSerializer.java:71) > at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseSe= rvice.java:114) > at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseSe= rvice.java:75) > at org.apache.ambari.server.api.services.ViewSubResourceService.handleReq= uest(ViewSubResourceService.java:85) > at org.apache.ambari.view.slider.rest.SliderAppsResource.getApp(SliderApp= sResource.java:94) > at sun.reflect.GeneratedMethodAccessor323.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccess= orImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:497) > at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMet= hodInvokerFactory.java:60) > at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMetho= dDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispat= chProvider.java:205) > at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDis= patcher.dispatch(ResourceJavaMethodDispatcher.java:75) > at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodR= ule.java:302) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorR= ule.java:137) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorR= ule.java:137) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorR= ule.java:137) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(Resource= ClassRule.java:108) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(Ro= otResourceClassesRule.java:84) > at com.sun.jersey.server.impl.application.WebApplicationImpl._handleReque= st(WebApplicationImpl.java:1542) > at com.sun.jersey.server.impl.application.WebApplicationImpl._handleReque= st(WebApplicationImpl.java:1473) > at com.sun.jersey.server.impl.application.WebApplicationImpl.handleReques= t(WebApplicationImpl.java:1419) > at com.sun.jersey.server.impl.application.WebApplicationImpl.handleReques= t(WebApplicationImpl.java:1409) > at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent= .java:409) > at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletC= ontainer.java:540) > at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletC= ontainer.java:715) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:770) > at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1496) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:330) > at org.springframework.security.web.access.intercept.FilterSecurityInterc= eptor.invoke(FilterSecurityInterceptor.java:118) > at org.springframework.security.web.access.intercept.FilterSecurityInterc= eptor.doFilter(FilterSecurityInterceptor.java:84) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.access.ExceptionTranslationFilter.doF= ilter(ExceptionTranslationFilter.java:113) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.session.SessionManagementFilter.doFil= ter(SessionManagementFilter.java:103) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.authentication.AnonymousAuthenticatio= nFilter.doFilter(AnonymousAuthenticationFilter.java:113) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.servletapi.SecurityContextHolderAware= RequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.= doFilter(RequestCacheAwareFilter.java:45) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.apache.ambari.server.security.authorization.AmbariAuthorizationFil= ter.doFilter(AmbariAuthorizationFilter.java:196) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.authentication.www.BasicAuthenticatio= nFilter.doFilter(BasicAuthenticationFilter.java:150) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.context.SecurityContextPersistenceFil= ter.doFilter(SecurityContextPersistenceFilter.java:87) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.FilterChainProxy.doFilterInternal(Fil= terChainProxy.java:192) > at org.springframework.security.web.FilterChainProxy.doFilter(FilterChain= Proxy.java:160) > at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(De= legatingFilterProxy.java:237) > at org.springframework.web.filter.DelegatingFilterProxy.doFilter(Delegati= ngFilterProxy.java:167) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.api.MethodOverrideFilter.doFilter(MethodOverr= ideFilter.java:72) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.api.AmbariPersistFilter.doFilter(AmbariPersis= tFilter.java:47) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.security.AbstractSecurityHeaderFilter.doFilte= r(AbstractSecurityHeaderFilter.java:109) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.security.AbstractSecurityHeaderFilter.doFilte= r(AbstractSecurityHeaderFilter.java:109) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.ja= va:82) > at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:294) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:= 501) > at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.ja= va:137) > at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java= :557) > at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandle= r.java:231) > at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandle= r.java:1086) > at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:4= 29) > at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler= .java:193) > at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler= .java:1020) > at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.ja= va:135) > at org.apache.ambari.server.controller.AmbariHandlerList.processHandlers(= AmbariHandlerList.java:216) > at org.apache.ambari.server.controller.AmbariHandlerList.processHandlers(= AmbariHandlerList.java:205) > at org.apache.ambari.server.controller.AmbariHandlerList.handle(AmbariHan= dlerList.java:139) > at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.= java:116) > at org.eclipse.jetty.server.Server.handle(Server.java:370) > at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(Abstract= HttpConnection.java:494) > at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(Abstrac= tHttpConnection.java:971) > at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerC= omplete(AbstractHttpConnection.java:1033) > at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644) > at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) > at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnectio= n.java:82) > at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEnd= Point.java:696) > at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndP= oint.java:53) > at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool= .java:608) > at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.= java:543) > at java.lang.Thread.run(Thread.java:745) > Caused by: org.codehaus.jackson.JsonGenerationException: Can not write a = field name, expecting a value > at org.codehaus.jackson.impl.JsonGeneratorBase._reportError(JsonGenerator= Base.java:480) > at org.codehaus.jackson.impl.WriterBasedGenerator.writeFieldName(WriterBa= sedGenerator.java:195) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.handl= eResourceProperties(JsonSerializer.java:192) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.proce= ssNode(JsonSerializer.java:113) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.proce= ssNode(JsonSerializer.java:125) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.seria= lize(JsonSerializer.java:65) > ... 92 more > 03 Jun 2016 10:35:37,009 WARN [qtp-ambari-client-7580] ServletHandler:56= 3 - /api/v1/views/SLIDER/versions/2.0.0/instances/test/apps/1464907776624_1= 9 > java.lang.RuntimeException: Unable to serialize to json: org.codehaus.jac= kson.JsonGenerationException: Can not start an object, expecting field name > at org.apache.ambari.server.api.services.serializers.JsonSerializer.seria= lize(JsonSerializer.java:71) > at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseSe= rvice.java:114) > at org.apache.ambari.server.api.services.BaseService.handleRequest(BaseSe= rvice.java:75) > at org.apache.ambari.server.api.services.ViewSubResourceService.handleReq= uest(ViewSubResourceService.java:85) > at org.apache.ambari.view.slider.rest.SliderAppsResource.getApp(SliderApp= sResource.java:94) > at sun.reflect.GeneratedMethodAccessor323.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccess= orImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:497) > at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMet= hodInvokerFactory.java:60) > at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMetho= dDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispat= chProvider.java:205) > at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDis= patcher.dispatch(ResourceJavaMethodDispatcher.java:75) > at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodR= ule.java:302) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorR= ule.java:137) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorR= ule.java:137) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorR= ule.java:137) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(Resource= ClassRule.java:108) > at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHan= dPathRule.java:147) > at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(Ro= otResourceClassesRule.java:84) > at com.sun.jersey.server.impl.application.WebApplicationImpl._handleReque= st(WebApplicationImpl.java:1542) > at com.sun.jersey.server.impl.application.WebApplicationImpl._handleReque= st(WebApplicationImpl.java:1473) > at com.sun.jersey.server.impl.application.WebApplicationImpl.handleReques= t(WebApplicationImpl.java:1419) > at com.sun.jersey.server.impl.application.WebApplicationImpl.handleReques= t(WebApplicationImpl.java:1409) > at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent= .java:409) > at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletC= ontainer.java:540) > at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletC= ontainer.java:715) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:770) > at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1496) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:330) > at org.springframework.security.web.access.intercept.FilterSecurityInterc= eptor.invoke(FilterSecurityInterceptor.java:118) > at org.springframework.security.web.access.intercept.FilterSecurityInterc= eptor.doFilter(FilterSecurityInterceptor.java:84) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.access.ExceptionTranslationFilter.doF= ilter(ExceptionTranslationFilter.java:113) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.session.SessionManagementFilter.doFil= ter(SessionManagementFilter.java:103) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.authentication.AnonymousAuthenticatio= nFilter.doFilter(AnonymousAuthenticationFilter.java:113) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.servletapi.SecurityContextHolderAware= RequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.= doFilter(RequestCacheAwareFilter.java:45) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.apache.ambari.server.security.authorization.AmbariAuthorizationFil= ter.doFilter(AmbariAuthorizationFilter.java:196) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.authentication.www.BasicAuthenticatio= nFilter.doFilter(BasicAuthenticationFilter.java:150) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.context.SecurityContextPersistenceFil= ter.doFilter(SecurityContextPersistenceFilter.java:87) > at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.d= oFilter(FilterChainProxy.java:342) > at org.springframework.security.web.FilterChainProxy.doFilterInternal(Fil= terChainProxy.java:192) > at org.springframework.security.web.FilterChainProxy.doFilter(FilterChain= Proxy.java:160) > at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(De= legatingFilterProxy.java:237) > at org.springframework.web.filter.DelegatingFilterProxy.doFilter(Delegati= ngFilterProxy.java:167) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.api.MethodOverrideFilter.doFilter(MethodOverr= ideFilter.java:72) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.api.AmbariPersistFilter.doFilter(AmbariPersis= tFilter.java:47) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.security.AbstractSecurityHeaderFilter.doFilte= r(AbstractSecurityHeaderFilter.java:109) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.apache.ambari.server.security.AbstractSecurityHeaderFilter.doFilte= r(AbstractSecurityHeaderFilter.java:109) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.ja= va:82) > at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:294) > at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletH= andler.java:1467) > at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:= 501) > at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.ja= va:137) > at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java= :557) > at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandle= r.java:231) > at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandle= r.java:1086) > at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:4= 29) > at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler= .java:193) > at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler= .java:1020) > at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.ja= va:135) > at org.apache.ambari.server.controller.AmbariHandlerList.processHandlers(= AmbariHandlerList.java:216) > at org.apache.ambari.server.controller.AmbariHandlerList.processHandlers(= AmbariHandlerList.java:205) > at org.apache.ambari.server.controller.AmbariHandlerList.handle(AmbariHan= dlerList.java:139) > at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.= java:116) > at org.eclipse.jetty.server.Server.handle(Server.java:370) > at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(Abstract= HttpConnection.java:494) > at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(Abstrac= tHttpConnection.java:971) > at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerC= omplete(AbstractHttpConnection.java:1033) > at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644) > at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) > at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnectio= n.java:82) > at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEnd= Point.java:696) > at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndP= oint.java:53) > at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool= .java:608) > at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.= java:543) > at java.lang.Thread.run(Thread.java:745) > Caused by: org.codehaus.jackson.JsonGenerationException: Can not start an= object, expecting field name > at org.codehaus.jackson.impl.JsonGeneratorBase._reportError(JsonGenerator= Base.java:480) > at org.codehaus.jackson.impl.WriterBasedGenerator._verifyValueWrite(Write= rBasedGenerator.java:836) > at org.codehaus.jackson.impl.WriterBasedGenerator.writeStartObject(Writer= BasedGenerator.java:273) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.proce= ssNode(JsonSerializer.java:106) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.proce= ssNode(JsonSerializer.java:125) > at org.apache.ambari.server.api.services.serializers.JsonSerializer.seria= lize(JsonSerializer.java:65) > ... 92 more=E2=80=8B > {noformat} > Can you please let me know what went wrong? -- This message was sent by Atlassian JIRA (v6.3.4#6332)