java.io.IOException: Failed to write loadStatistics

Jenkins JIRA | cyberguide | 7 years ago
  1. 0

    Currently, we have a dead node on our hudson farm (it actually is a vm running a hudson slave agent). The problem with that is it breaks the "manage nodes" view rendering when heading for the api/xml or api/json variant of that view. (<base-url>/computers/api/xml). The resulting page includes the stacktrace. Even worse, the generated error page is not valid html so that the stacktrace does not render nicely. I think this bug is related to "NPE when trying to delete dead node." which I can reproduce currently (having the dead node). Deleteing the node fails as described, making it impossible to work around the problem. As a workaround, I am parsing the html page content instead of the api/xml which however is a brittle solution. Here is what I get on the screen: </pre><br><hr size="1" width="90%"><i>Generated by Winstone Servlet Engine v0.9.10 at Wed Nov 25 13:06:32 CET 2009</i></body></html> ------------------------------------------------------------------------------------------------------------------------^ Here is the acutal content of the page that could not render: <html><head><title>Error 500</title></head><body bgcolor="#ffffff"><h1>Status Code: 500</h1>Exception: <br>Stacktrace: <pre>java.io.IOException: Failed to write loadStatistics at org.kohsuke.stapler.export.Property.writeTo(Property.java:88) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:142) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:139) at org.kohsuke.stapler.export.Property.writeValue(Property.java:180) at org.kohsuke.stapler.export.Property.writeValue(Property.java:130) at org.kohsuke.stapler.export.Property.writeValue(Property.java:98) at org.kohsuke.stapler.export.Property.writeTo(Property.java:82) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:142) at org.kohsuke.stapler.export.Model.writeTo(Model.java:133) at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:155) at hudson.model.Api.doXml(Api.java:86) at sun.reflect.GeneratedMethodAccessor341.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:185) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:101) at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:54) at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:74) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:489) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:144) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:489) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:144) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:489) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:405) at org.kohsuke.stapler.Stapler.service(Stapler.java:116) at javax.servlet.http.HttpServlet.service(HttpServlet.java:45) at winstone.ServletConfiguration.execute(ServletConfiguration.java:249) at winstone.RequestDispatcher.forward(RequestDispatcher.java:335) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94) at org.jvnet.hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:38) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:97) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84) at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249) at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at winstone.RequestDispatcher.forward(RequestDispatcher.java:333) at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244) at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor129.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:43) at org.kohsuke.stapler.export.Property.writeTo(Property.java:82) ... 64 more Caused by: java.lang.NullPointerException at hudson.model.Computer.getLoadStatistics(Computer.java:346) ... 69 more </pre><br><hr size="1" width="90%"><i>Generated by Winstone Servlet Engine v0.9.10 at Wed Nov 25 13:06:32 CET 2009</i></body></html>

    Jenkins JIRA | 7 years ago | cyberguide
    java.io.IOException: Failed to write loadStatistics
  2. 0

    Currently, we have a dead node on our hudson farm (it actually is a vm running a hudson slave agent). The problem with that is it breaks the "manage nodes" view rendering when heading for the api/xml or api/json variant of that view. (<base-url>/computers/api/xml). The resulting page includes the stacktrace. Even worse, the generated error page is not valid html so that the stacktrace does not render nicely. I think this bug is related to "NPE when trying to delete dead node." which I can reproduce currently (having the dead node). Deleteing the node fails as described, making it impossible to work around the problem. As a workaround, I am parsing the html page content instead of the api/xml which however is a brittle solution. Here is what I get on the screen: </pre><br><hr size="1" width="90%"><i>Generated by Winstone Servlet Engine v0.9.10 at Wed Nov 25 13:06:32 CET 2009</i></body></html> ------------------------------------------------------------------------------------------------------------------------^ Here is the acutal content of the page that could not render: <html><head><title>Error 500</title></head><body bgcolor="#ffffff"><h1>Status Code: 500</h1>Exception: <br>Stacktrace: <pre>java.io.IOException: Failed to write loadStatistics at org.kohsuke.stapler.export.Property.writeTo(Property.java:88) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:142) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:139) at org.kohsuke.stapler.export.Property.writeValue(Property.java:180) at org.kohsuke.stapler.export.Property.writeValue(Property.java:130) at org.kohsuke.stapler.export.Property.writeValue(Property.java:98) at org.kohsuke.stapler.export.Property.writeTo(Property.java:82) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:142) at org.kohsuke.stapler.export.Model.writeTo(Model.java:133) at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:155) at hudson.model.Api.doXml(Api.java:86) at sun.reflect.GeneratedMethodAccessor341.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:185) at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:101) at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:54) at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:74) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:489) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:144) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:489) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:144) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:30) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:489) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:405) at org.kohsuke.stapler.Stapler.service(Stapler.java:116) at javax.servlet.http.HttpServlet.service(HttpServlet.java:45) at winstone.ServletConfiguration.execute(ServletConfiguration.java:249) at winstone.RequestDispatcher.forward(RequestDispatcher.java:335) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:378) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94) at org.jvnet.hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:38) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:97) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84) at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249) at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164) at winstone.FilterConfiguration.execute(FilterConfiguration.java:195) at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:368) at winstone.RequestDispatcher.forward(RequestDispatcher.java:333) at winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:244) at winstone.RequestHandlerThread.run(RequestHandlerThread.java:150) at java.lang.Thread.run(Thread.java:595) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.GeneratedMethodAccessor129.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.kohsuke.stapler.export.MethodProperty.getValue(MethodProperty.java:43) at org.kohsuke.stapler.export.Property.writeTo(Property.java:82) ... 64 more Caused by: java.lang.NullPointerException at hudson.model.Computer.getLoadStatistics(Computer.java:346) ... 69 more </pre><br><hr size="1" width="90%"><i>Generated by Winstone Servlet Engine v0.9.10 at Wed Nov 25 13:06:32 CET 2009</i></body></html>

    Jenkins JIRA | 7 years ago | cyberguide
    java.io.IOException: Failed to write loadStatistics
  3. 0

    Bug in 1.481 with api/xml

    Google Groups | 4 years ago | Matthew...@diamond.ac.uk
    java.io.IOException: Failed to write offlineCauseReason
  4. Speed up your debug routine!

    Automated exception search integrated into your IDE

  5. 0

    Upgrade to LTS 1.596.1. Same call works on prior version (1.565.3). Some data is returned, then oops page. Original exception: {noformat} Caused by: java.lang.NullPointerException at java.text.SimpleDateFormat.parse(SimpleDateFormat.java:1439) at java.text.DateFormat.parse(DateFormat.java:364) at hudson.plugins.git.GitChangeSet.getTimestamp(GitChangeSet.java:195){noformat} depth=0 is fine, 1, 2 fail: Stack trace {noformat}java.io.IOException: Failed to write timestamp at org.kohsuke.stapler.export.Property.writeTo(Property.java:122) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:197) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Property.writeValue(Property.java:241) at org.kohsuke.stapler.export.Property.writeValue(Property.java:172) at org.kohsuke.stapler.export.Property.writeValue(Property.java:139) at org.kohsuke.stapler.export.Property.writeTo(Property.java:116) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:197) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Property.writeValue(Property.java:241) at org.kohsuke.stapler.export.Property.writeValue(Property.java:139) at org.kohsuke.stapler.export.Property.writeTo(Property.java:116) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:197) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Property.writeValue(Property.java:241) at org.kohsuke.stapler.export.Property.writeValue(Property.java:187) at org.kohsuke.stapler.export.Property.writeValue(Property.java:139) at org.kohsuke.stapler.export.Property.writeTo(Property.java:116) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:197) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:192) at org.kohsuke.stapler.export.Model.writeTo(Model.java:164) at org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:267) at hudson.model.Api.doJson(Api.java:211) at sun.reflect.GeneratedMethodAccessor546.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) 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:121) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876) at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:211) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876) at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249) at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53) at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876) at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649) at org.kohsuke.stapler.Stapler.service(Stapler.java:238) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:96) at com.cloudbees.jenkins.support.slowrequest.SlowRequestFilter.doFilter(SlowRequestFilter.java:37) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99) at jenkins.metrics.impl.MetricsFilter.doFilter(MetricsFilter.java:117) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99) at hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:66) at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:99) at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:102) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:91) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84) at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at jenkins.security.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:117) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at hudson.security.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:114) at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87) at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90) at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) ...{noformat}

    Jenkins JIRA | 2 years ago | Daryl Spartz
    java.io.IOException: Failed to write timestamp
  6. 0

    [JIRA] (JENKINS-36074) "failed to write commitId" causes /blue to break completely

    Google Groups | 6 months ago | marc....@gmail.com (JIRA)
    java.io.IOException: Failed to write commitId

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    Root Cause Analysis

    1. java.io.IOException

      Failed to write loadStatistics

      at org.kohsuke.stapler.export.Property.writeTo()
    2. Stapler
      ResponseImpl.serveExposedBean
      1. org.kohsuke.stapler.export.Property.writeTo(Property.java:88)
      2. org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:142)
      3. org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:139)
      4. org.kohsuke.stapler.export.Property.writeValue(Property.java:180)
      5. org.kohsuke.stapler.export.Property.writeValue(Property.java:130)
      6. org.kohsuke.stapler.export.Property.writeValue(Property.java:98)
      7. org.kohsuke.stapler.export.Property.writeTo(Property.java:82)
      8. org.kohsuke.stapler.export.Model.writeNestedObjectTo(Model.java:142)
      9. org.kohsuke.stapler.export.Model.writeTo(Model.java:133)
      10. org.kohsuke.stapler.ResponseImpl.serveExposedBean(ResponseImpl.java:155)
      10 frames
    3. Hudson
      Api.doXml
      1. hudson.model.Api.doXml(Api.java:86)
      1 frame
    4. Java RT
      GeneratedMethodAccessor341.invoke
      1. sun.reflect.GeneratedMethodAccessor341.invoke(Unknown Source)
      1 frame