[
https://issues.apache.org/jira/browse/LOGGING-119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13583314#comment-13583314
]
Thomas Neidhart commented on LOGGING-119:
-----------------------------------------
Well, for 1.1.2 it does not make much of a difference if we change the target.
We have to stick to Hashtables for now to keep binary compatibility. The
problem here should be solved, and for future versions (1.2?, 2.0) we will
surely use existing stuff like WeakHashMap.
> 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)
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
