Startup crash under eclipse

[nfg]

Hi,

I've recently started to experience debug traps when starting JBoss-3.2.7 under Eclipse 3 (all on windows xp, j2sdk-1.4.2_06). Here's a stacktrace of the first exception encountered:

Thread [main] (Suspended (exception NullPointerException))
 InputStreamReader(Reader).<init>(Object) line: 61
 InputStreamReader.<init>(InputStream, String) line: 80
 PropertyMap(Properties).load(InputStream) line: 266
 Main.<init>(String) line: 103
 NamingService.<init>() line: 57
 NativeConstructorAccessorImpl.newInstance0(Constructor, Object[]) line: not available [native method]
 NativeConstructorAccessorImpl.newInstance(Object[]) line: 39
 DelegatingConstructorAccessorImpl.newInstance(Object[]) line: 27
 Constructor.newInstance(Object[]) line: 274
 MBeanServerImpl.instantiate(String, ClassLoader, Object[], String[]) line: 871
 MBeanServerImpl.instantiate(String, ObjectName, Object[], String[]) line: 290
 ServiceCreator.install(ObjectName, ObjectName, Element) line: 160
 ServiceConfigurator.internalInstall(Element, List, ObjectName, boolean) line: 152
 ServiceConfigurator.install(Element, ObjectName) line: 117
 ServiceController.install(Element, ObjectName) line: 199
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60a
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 MBeanProxyExt.invoke(Object, Method, Object[]) line: 176
 $Proxy4.install(Element, ObjectName) line: not available
 SARDeployer.create(DeploymentInfo) line: 204
 MainDeployer.create(DeploymentInfo) line: 783
 MainDeployer.deploy(DeploymentInfo) line: 640
 MainDeployer.deploy(URL) line: 604
 MainDeployer.deploy(String) line: 588
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 MBeanProxyExt.invoke(Object, Method, Object[]) line: 176
 $Proxy5.deploy(String) line: not available
 ServerImpl.doStart() line: 407
 ServerImpl.start() line: 311
 Main.boot(String[]) line: 191
 Main$1.run() line: 480
 Thread.run() line: 534

Clicking continue in the eclipse debugger lets it continue until the following message is displayed:

21:07:38,343 INFO [RARMetaData] Required license terms present. See deployment descriptor.

and then the following exception is trapped by the debugger multiple times:

Thread [main] (Suspended (exception NullPointerException))
 SARDeployer.parseDocument(DeploymentInfo) line: 540
 SARDeployer.init(DeploymentInfo) line: 137
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 JMXInvocationHandler.invoke(Object, Method, Object[]) line: 274
 $Proxy26.init(DeploymentInfo) line: not available
 XSLSubDeployer.init(DeploymentInfo) line: 210
 MainDeployer.init(DeploymentInfo) line: 696
 MainDeployer.deploy(DeploymentInfo) line: 631
 MainDeployer.deploy(URL) line: 604
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 MBeanProxyExt.invoke(Object, Method, Object[]) line: 176
 $Proxy8.deploy(URL) line: not available
 URLDeploymentScanner.deploy(URLDeploymentScanner$DeployedURL) line: 304
 URLDeploymentScanner.scan() line: 478
 AbstractDeploymentScanner$ScannerThread.doScan() line: 201
 URLDeploymentScanner(AbstractDeploymentScanner).startService() line: 274
 URLDeploymentScanner(ServiceMBeanSupport).jbossInternalStart() line: 271
 URLDeploymentScanner(ServiceMBeanSupport).jbossInternalLifecycle(String) line: 221
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 ServiceController$ServiceProxy.invoke(Object, Method, Object[]) line: 899
 $Proxy0.start() line: not available
 ServiceController.start(ObjectName) line: 415
 GeneratedMethodAccessor5.invoke(Object, Object[]) line: not available
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 MBeanProxyExt.invoke(Object, Method, Object[]) line: 176
 $Proxy4.start(ObjectName) line: not available
 SARDeployer.start(DeploymentInfo) line: 251
 MainDeployer.start(DeploymentInfo) line: 829
 MainDeployer.deploy(DeploymentInfo) line: 641
 MainDeployer.deploy(URL) line: 604
 MainDeployer.deploy(String) line: 588
 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method]
 NativeMethodAccessorImpl.invoke(Object, Object[]) line: 39
 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
 Method.invoke(Object, Object[]) line: 324
 ReflectedDispatcher.dispatch(Object[]) line: 60
 Invocation.dispatch(Object[]) line: 62
 Invocation.dispatch() line: 54
 Invocation.invoke() line: 82
 XMBean(AbstractMBeanInvoker).invoke(String, Object[], String[]) line: 198
 MBeanServerImpl.invoke(ObjectName, String, Object[], String[]) line: 473
 MBeanProxyExt.invoke(Object, Method, Object[]) line: 176
 $Proxy5.deploy(String) line: not available
 ServerImpl.doStart() line: 407
 ServerImpl.start() line: 311
 Main.boot(String[]) line: 191
 Main$1.run() line: 480
 Thread.run() line: 534

I am still in the process of downloading the source for 3.2.7 to see if I could maybe figure out what is going on.

I am running the "default" server with the iiop-service activated on postgreSQL 8.0.0-rc1 (and it's accompanying jdbc driver).

If anyone has seen this before and can offer some help it would be appreciated.

Regards.

[nfg]

Ok. I've managed to get the source down and found the following. The first exception is raised when an attempt is made to load from the "jnp.properties" file if it exists. If it doesn't an exception is thrown (which is ignored anyway), here's the code (jboss-3.2.7-src/naming/src/main/org/jnp/server/Main.java)

try
 {
 ClassLoader loader = getClass().getClassLoader();
 InputStream is = loader.getResourceAsStream("jnp.properties");
 System.getProperties().load(is);
 }
 catch (Exception e)
 {
 // Ignore
 }

I have no idea why eclipse is suddenly picking this up.

The second also seems quite harmless, as it's due to an attempt to close a stream that was never opened - again I have no clue why Eclipse is trapping these now.

Apart from being quite annoying (having to click "continue" multiple times), it looks like these are mostly harmless.

Thanks for listening ;)

[nfg]

Hi.

The last reply to my own posts for this thread - I promise. Turns out there are options in the Eclipse debugger (when in the debug view) under "Breakpoints" where one can toggle break on NullPointerException & ClassCastException. These got turned out by magic - without them all is fine.