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Hi All, I am working on a feature "auto refresh" for buildgraph-view plugin. I have completed every thing and its working fine except one scenario. The scenario goes like below: Build(FreeStyleProject) -> Deploy(FreeStyleProject) -> Test(FreeStyleProject) -> StartQA(BuildFlow) -> BuildQA(FreeStyleProject) -> Deploy(FreeStyleProject) -> TestQA(FreeStyleProject) Flow is going fine when we view the BuildGraph after completion of upstream and downstream projects completed. But the issue is coming when viewing the BuildGraph at running. With FreeStyleProject types no issues, it is with at the time of BuildFlow job type. Github: https://github.com/pskumar448/buildgraph-view/tree/autorefresh 2016-04-28 07:45:58.056:/jenkins:WARN: Error while serving http://localhost:8080/jenkins/job/Build/34//BuildGraph/api/json java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor125.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:298) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:161) at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:96) at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:120) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:733) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:863) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:210) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:733) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:863) at org.kohsuke.stapler.MetaClass$12.dispatch(MetaClass.java:390) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:733) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:863) at org.kohsuke.stapler.MetaClass$12.dispatch(MetaClass.java:390) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:733) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:863) at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:248) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:733) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:863) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:636) at org.kohsuke.stapler.Stapler.service(Stapler.java:225) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:491) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1074) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:96) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:88) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:48) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:46) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81) at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1065) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:365) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:185) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:689) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:391) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:146) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:139) at org.mortbay.jetty.Server.handle(Server.java:285) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:457) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:751) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:500) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:209) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:357) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:329) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:475) Caused by: java.io.IOException: Failed to write buildSteps at org.kohsuke.stapler.export.Property.writeTo(Property.java:122) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:190) at org.kohsuke.stapler.export.Model.writeTo(Model.java:157) at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:267) at hudson.model.Api.doJson(Api.java:205) ... 58 more Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:66) at org.kohsuke.stapler.export.Property.writeTo(Property.java:116) ... 62 more Caused by: java.lang.NullPointerException at org.jenkinsci.plugins.buildgraphview.BuildExecution.<init>(BuildExecution.java:52) at org.jenkinsci.plugins.buildgraphview.BuildGraph.getExecution(BuildGraph.java:94) at org.jenkinsci.plugins.buildgraphview.BuildGraph.computeGraphFrom(BuildGraph.java:80) at org.jenkinsci.plugins.buildgraphview.BuildGraph.computeGraphFrom(BuildGraph.java:84) at org.jenkinsci.plugins.buildgraphview.BuildGraph.computeGraphFrom(BuildGraph.java:84) at org.jenkinsci.plugins.buildgraphview.BuildGraph.computeGraphFrom(BuildGraph.java:84) at org.jenkinsci.plugins.buildgraphview.BuildGraph.computeGraphFrom(BuildGraph.java:84) at org.jenkinsci.plugins.buildgraphview.BuildGraph.getGraph(BuildGraph.java:69) at org.jenkinsci.plugins.buildgraphview.BuildGraph.getBuildSteps(BuildGraph.java:148) ... 67 more Thanks in advance, Suresh -- You received this message because you are subscribed to the Google Groups "Jenkins Developers" group. 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