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From: "Gary Gregory (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
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Subject: [jira] [Commented] (LOGGING-119) deadlock on re-registration of
 logger
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    [ https://issues.apache.org/jira/browse/LOGGING-119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13583246#comment-13583246 ] 

Gary Gregory commented on LOGGING-119:
--------------------------------------

and it's February 2013! ;)

I think we can bump the target to 1.4 without controversy.

The super conservative route would be to
# release 1.1.2 as is, no platform changes.
# update the platform requirement to whatever we agree on for 1.2, Java 1.4, 5, 6, or 7.


                
> deadlock on re-registration of logger
> -------------------------------------
>
>                 Key: LOGGING-119
>                 URL: https://issues.apache.org/jira/browse/LOGGING-119
>             Project: Commons Logging
>          Issue Type: Bug
>    Affects Versions: 1.1.1
>         Environment: Java 1.5, Windows
>            Reporter: Nitzan Niv
>             Fix For: 1.1.2
>
>         Attachments: BugDeadlock.java, Patch-WeakHashtable-1.1.1.txt
>
>
> Reached a deadlock inside common-logging while concurrently re-deploying 2 WARs.
> In each WAR there is an attempt to get a logger:
> private final Log logger = LogFactory.getLog(ContextLoader.class);
> Thread dump:
> [deadlocked thread] Thread-96:
> -----------------------------
> Thread 'Thread-96' is waiting to acquire lock 'java.lang.ref.ReferenceQueue@5266e0' that is held by thread 'Thread-102'
> Stack trace:
> ------------
>         org.apache.commons.logging.impl.WeakHashtable.purge(WeakHashtable.java:323)
>         org.apache.commons.logging.impl.WeakHashtable.rehash(WeakHashtable.java:312)
>         java.util.Hashtable.put(Hashtable.java:414)
>         org.apache.commons.logging.impl.WeakHashtable.put(WeakHashtable.java:242)
>         org.apache.commons.logging.LogFactory.cacheFactory(LogFactory.java:1004)
>         org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:657)
>         org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)
>         org.springframework.web.context.ContextLoader.<init>(ContextLoader.java:145)
>  
> [deadlocked thread] Thread-102:
> ------------------------------
> Thread 'Thread-102' is waiting to acquire lock 'org.apache.commons.logging.impl.
> WeakHashtable@1e02138' that is held by thread 'Thread-96'
> Stack trace:
> ------------
>         java.util.Hashtable.remove(Hashtable.java:437)
>         org.apache.commons.logging.impl.WeakHashtable.purgeOne(WeakHashtable.java:338)
>         org.apache.commons.logging.impl.WeakHashtable.put(WeakHashtable.java:238)
>         org.apache.commons.logging.LogFactory.cacheFactory(LogFactory.java:1004)
>         org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:657)
>         org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)
>         org.springframework.web.context.ContextLoader.<init>(ContextLoader.java:145)

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