Java JSON exception with an empty parametrized build.

[Eliezer Croitoru]

Hey list,

I'm new to Jenkins and I am using it to run and deploy couple RPMs and
sources.

I encountered an issue\bug with a new project.
I am using Jenkins 1.650 and 1.642 on different hosts but the result is
the same on all of them.
When marking the "This build is parameterized" in a Freestyle project
but yet to add parameters and starting a build, in the web interface I
am receiving some JSON java exception.

I have assumed that it should not crash but it does.
I think it's a bug and wanted to verify if it is intentional or it's
bug. Also if it's a bug, do I report it in some specific place?

Thanks,
Eliezer

[Victor Martinez]

Hi

 You can raise a ticket in https://issues.jenkins-ci.org/secure/Dashboard.jspa, but can you copy&paste that error? 

Cheers

[Eliezer Croitoru]

Victor,

Thanks for the quick reply.
This specific machine uses 1.642.2 from the redhat lts\stable repository.

I would expect the build job to run even if there are no parameters
defined for it.

Snapshots from the webui:
build page(without parameters) - http://snag.gy/loua2.jpg
exception - http://snag.gy/eZshW.jpg

Exception output after :
A problem occurred while processing the request. Please check our bug
tracker to see if a similar problem has already been reported. If it is
already reported, please vote and put a comment on it to let us gauge
the impact of the problem. If you think this is a new issue, please file
a new issue. When you file an issue, make sure to add the entire stack
trace, along with the version of Jenkins and relevant plugins. The users
list might be also useful in understanding what has happened.
Stack trace

javax.servlet.ServletException: java.lang.ClassCastException:
net.sf.json.JSONNull cannot be cast to net.sf.json.JSONObject
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:796)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.MetaClass$6.doDispatch(MetaClass.java:249)
at
org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:53)
at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:746)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:876)
at org.kohsuke.stapler.Stapler.invoke(Stapler.java:649)
at org.kohsuke.stapler.Stapler.service(Stapler.java:238)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:686)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1494)
at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:132)
at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:123)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:49)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at
hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)
at
hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)
at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at
org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at
hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:81)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1482)
at
org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
at
org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1474)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:499)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:533)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:428)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at
org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at
org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:960)
at
org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1021)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)
at
org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
at
org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassCastException: net.sf.json.JSONNull cannot be
cast to net.sf.json.JSONObject
at
hudson.model.ParametersDefinitionProperty._doBuild(ParametersDefinitionProperty.java:148)
at
jenkins.model.ParameterizedJobMixIn.doBuild(ParameterizedJobMixIn.java:191)
at hudson.model.AbstractProject.doBuild(AbstractProject.java:1752)
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:606)
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)
... 48 more
##END OF OUPUT

[Eliezer Croitoru]

Reported a bug at:
https://issues.jenkins-ci.org/browse/JENKINS-33201