[jira] [Resolved] (SLING-3189) LogbackManager causes lockup on second startup

["Chetan Mehrotra (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SLING-3189?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chetan Mehrotra resolved SLING-3189.
------------------------------------

       Resolution: Fixed
    Fix Version/s: Commons Log 4.0.0

Patch was applied by [~bdelacretaz] at rev http://svn.apache.org/r1534615 and seems to resolve the issue for now.

> LogbackManager causes lockup on second startup
> ----------------------------------------------
>
>                 Key: SLING-3189
>                 URL: https://issues.apache.org/jira/browse/SLING-3189
>             Project: Sling
>          Issue Type: Bug
>          Components: Commons
>    Affects Versions: Commons Log 3.0.2
>            Reporter: Bertrand Delacretaz
>            Assignee: Chetan Mehrotra
>             Fix For: Commons Log 4.0.0
>
>         Attachments: SLING-3189.patch, SLING-3189.stack.txt
>
>
> Looks like I didn't test yesterday's SLING-3185 fix thoroughly enough, I'm seeing a system lockup on second startup of the current trunk launchpad.
> Steps to reproduce:
> 1. Start launchpad/builder runnable jar with no existing sling folder, Sling starts fine.
> 2. Stop and restart.
> 3. Sling doesn't start, the BundleWiringImpl waits forever on a classloading call triggered by StaticLoggerBinder.getSingleton()
> Stack trace:
> Daemon Thread [FelixStartLevel] (Suspended)	
> 	owns: BundleWiringImpl$BundleClassLoaderJava5  (id=40)	
> 	waiting for: HashMap<K,V>  (id=41)	
> 	Object.wait(long) line: not available [native method]	
> 	HashMap<K,V>(Object).wait() line: 485	
> 	BundleWiringImpl$BundleClassLoaderJava5(BundleWiringImpl$BundleClassLoader).findClass(String) line: 2050	
> 	BundleWiringImpl.findClassOrResourceByDelegation(String, boolean) line: 1472	
> 	BundleWiringImpl.access$400(BundleWiringImpl, String, boolean) line: 75	
> 	BundleWiringImpl$BundleClassLoaderJava5(BundleWiringImpl$BundleClassLoader).loadClass(String, boolean) line: 1923	
> 	BundleWiringImpl$BundleClassLoaderJava5(ClassLoader).loadClass(String) line: 247	
> 	LogbackManager.ensureSlf4jIsInitialized() line: 147	
> 	LogbackManager.<init>(BundleContext) line: 103	
> 	Activator.start(BundleContext) line: 55	



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