[ 
https://issues.jenkins-ci.org/browse/JENKINS-8468?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=160777#comment-160777
 ] 

whren commented on JENKINS-8468:
--------------------------------

Same thing reproduced on jenkins v1.456.

Disabled plugins :
- Jenkins Throttle Concurrent Builds Plug-in
- Warnings Plug-in


In http://x.y.z/administrativeMonitor/OldData/manage

Type : hudson.maven.MavenModuleSet
Errors : 
- CannotResolveClassException: 
hudson.plugins.throttleconcurrents.ThrottleJobProperty : 
hudson.plugins.throttleconcurrents.ThrottleJobProperty,
- CannotResolveClassException: hudson.plugins.warnings.WarningsPublisher : 
hudson.plugins.warnings.WarningsPublisher 

Hitting the button to fix this entries result in NPE :

Status Code: 500
Exception: 
Stacktrace: 
java.lang.NullPointerException
        at hudson.model.AbstractItem.getRootDir(AbstractItem.java:162)
        at hudson.model.Items.getConfigFile(Items.java:130)
        at hudson.model.AbstractItem.getConfigFile(AbstractItem.java:461)
        at hudson.model.AbstractItem.save(AbstractItem.java:456)
        at hudson.model.Job.save(Job.java:146)
        at hudson.diagnosis.OldDataMonitor.doDiscard(OldDataMonitor.java:274)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at 
org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:288)
        at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:151)
        at 
org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:90)
        at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:111)
        at 
org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:563)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:648)
        at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:241)
        at 
org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
        at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:563)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:648)
        at org.kohsuke.stapler.Stapler.invoke(Stapler.java:477)
        at org.kohsuke.stapler.Stapler.service(Stapler.java:159)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:45)
        at winstone.ServletConfiguration.execute(ServletConfiguration.java:248)
        at winstone.RequestDispatcher.forward(RequestDispatcher.java:333)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:376)
        at 
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:95)
        at 
net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:185)
        at 
net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:159)
        at 
net.bull.javamelody.PluginMonitoringFilter.doFilter(PluginMonitoringFilter.java:86)
        at 
org.jvnet.hudson.plugins.monitoring.HudsonMonitoringFilter.doFilter(HudsonMonitoringFilter.java:84)
        at 
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
        at 
hudson.plugins.audit_trail.AuditTrailFilter.doFilter(AuditTrailFilter.java:66)
        at 
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
        at 
hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:74)
        at 
hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:98)
        at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:87)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        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 winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at 
hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
        at winstone.FilterConfiguration.execute(FilterConfiguration.java:194)
        at winstone.RequestDispatcher.doFilter(RequestDispatcher.java:366)
        at winstone.RequestDispatcher.forward(RequestDispatcher.java:331)
        at 
winstone.RequestHandlerThread.processRequest(RequestHandlerThread.java:245)
        at winstone.RequestHandlerThread.run(RequestHandlerThread.java:148)
        at java.lang.Thread.run(Thread.java:636)



--------------------------------------------------------------------------------
Generated by Winstone Servlet Engine v0.9.10 at Mon Mar 26 15:52:20 CEST 2012
                
> NPE during fixing of old data
> -----------------------------
>
>                 Key: JENKINS-8468
>                 URL: https://issues.jenkins-ci.org/browse/JENKINS-8468
>             Project: Jenkins
>          Issue Type: Bug
>          Components: core
>         Environment: linux, hudson 1.392/1.393, jdk1.6.0_19
>            Reporter: carlspring
>
> Hudson (1.392 and 1.393) both offered to correct old data, so I clicked on 
> "discard". Here is what I got, while accessing:
> {code}
> http://builder/hudson/administrativeMonitor/OldData/discard
> {code}
> Produces:
> {code}
> HTTP ERROR 500
> Problem accessing /hudson/administrativeMonitor/OldData/discard. Reason:
>     INTERNAL_SERVER_ERROR
> Caused by:
> java.lang.NullPointerException
>       at hudson.model.AbstractItem.getRootDir(AbstractItem.java:115)
>       at hudson.model.Items.getConfigFile(Items.java:121)
>       at hudson.model.AbstractItem.getConfigFile(AbstractItem.java:366)
>       at hudson.model.AbstractItem.save(AbstractItem.java:361)
>       at hudson.model.Job.save(Job.java:150)
>       at hudson.diagnosis.OldDataMonitor.doDiscard(OldDataMonitor.java:274)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:597)
>       at 
> org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:282)
>       at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:149)
>       at 
> org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:88)
>       at org.kohsuke.stapler.MetaClass$1.doDispatch(MetaClass.java:102)
>       at 
> org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
>       at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
>       at org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
>       at org.kohsuke.stapler.MetaClass$7.doDispatch(MetaClass.java:242)
>       at 
> org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
>       at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:562)
>       at org.kohsuke.stapler.Stapler.invoke(Stapler.java:640)
>       at org.kohsuke.stapler.Stapler.invoke(Stapler.java:478)
>       at org.kohsuke.stapler.Stapler.service(Stapler.java:160)
>       at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
>       at 
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
>       at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
>       at 
> hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)
>       at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)
>       at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>       at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)
>       at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>       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$1.doFilter(ChainedServletFilter.java:87)
>       at 
> hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
>       at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)
>       at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>       at 
> hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
>       at 
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
>       at 
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
>       at 
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>       at 
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
>       at 
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
>       at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
>       at 
> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
>       at 
> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
>       at 
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>       at org.mortbay.jetty.Server.handle(Server.java:326)
>       at 
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
>       at 
> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:939)
>       at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
>       at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
>       at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
>       at 
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
>       at 
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
> Powered by Jetty://
> {code}
> Unfortunately, I have come to the conclusion that Hudson's data migration 
> tool is very unreliable, as I've had it break my servers before. Please, fix!
> Many thanks in advance!

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