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Posted to issues@commons.apache.org by "Dennis Lundberg (JIRA)" <ji...@apache.org> on 2009/12/29 23:54:29 UTC
[jira] Commented: (LOGGING-119) deadlock on re-registration of
logger
[ https://issues.apache.org/jira/browse/LOGGING-119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12795181#action_12795181 ]
Dennis Lundberg commented on LOGGING-119:
-----------------------------------------
I've tested the Test Case, but it runs without deadlock for me on Java 1.4, 1.5 and 1.6 on Windows.
> 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
> 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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