[prev in list] [next in list] [prev in thread] [next in thread] 

List:       jboss-development
Subject:    [JBoss-dev] [Caches on JBoss (Caches/JBoss)] - Re: TreeCache deadlock
From:       chucklan <nukes () jboss ! org>
Date:       2004-06-30 0:36:00
Message-ID: 32471638.1088555761076.JavaMail.root () ads ! jboss ! org
[Download RAW message or body]

I also encountered a deadlock.  I'm instantiating two TreeCache instances in my \
application.   One through Hibernate for the second level cache, and the other for \
read cache.  When I call cache.put(fqn, key, val) for the read cache, I'm getting the \
following:

(note, normally there are no TimeoutExceptions, except when we call put concurrently \
through two separate threads.)


  | [17:17:11.480] Thread[thread-pool-38,5,main]before cache put for daily
  | 17:17:11,480 DEBUG [TreeCache] _remove(<clan:3575>:11, "/SWSOCCER/scoreLists", \
DAILY)  | 17:17:11,480 DEBUG [IdentityLock] acquireReadLock(): caller already owns \
lock.  | 17:17:11,480 DEBUG [Node] acquired RL: fqn=/SWSOCCER, owner=<clan:3575>:11, \
lock=org.jboss.cache.lock.IdentityLock@e98ccf  | 17:17:11,480 DEBUG [IdentityLock] \
acquireWriteLock(): upgrade lock  | 17:17:11,480 DEBUG [Node] acquired WL: \
fqn=/SWSOCCER/scoreLists, owner=<clan:3575>:10, \
lock=org.jboss.cache.lock.IdentityLock@11b9cc4  | 17:17:11,480 DEBUG [IdentityLock] \
release(): lock map owner <clan:3575>:11 not found. Could have been released.  | \
17:17:11,480 DEBUG [TreeCache] _put(<clan:3575>:10, "/SWSOCCER/scoreLists", DAILY, \
com.asw.highscore.model.ScoreList@a7c257)  | 17:17:11,480 DEBUG [TreeCache] \
rollback(): called to rollback cache  | 17:17:11,480 DEBUG [IdentityLock] \
acquireReadLock(): caller already owns lock.  | 17:17:11,480 DEBUG [TreeCache] \
rollback(): releasing lock org.jboss.cache.lock.IdentityLock@11b9cc4  | 17:17:11,480 \
DEBUG [Node] acquired RL: fqn=/SWSOCCER, owner=<clan:3575>:10, \
lock=org.jboss.cache.lock.IdentityLock@e98ccf  | 17:17:11,480 DEBUG [IdentityLock] \
release(): lock map owner <clan:3575>:11 not found. Could have been released.  | \
17:17:11,480 DEBUG [IdentityLock] acquireWriteLock(): caller already owns lock.  | \
17:17:11,480 DEBUG [TreeCache] rollback(): releasing lock \
org.jboss.cache.lock.IdentityLock@e98ccf  | 17:17:11,480 DEBUG [Node] acquired WL: \
fqn=/SWSOCCER/scoreLists, owner=<clan:3575>:10, \
lock=org.jboss.cache.lock.IdentityLock@11b9cc4  | 17:17:11,480 DEBUG [IdentityLock] \
release(): lock map owner <clan:3575>:11 not found. Could have been released.  | \
[17:17:11.480] IdentityLock.acquireWriteLock(): upgrade lock could not [17:17:11.480] \
IdentityLock.acquireWriteLock(): upgrade lock could not be acquired after 15000 ms. \
Lock map ownership Read lock owners: [<clan:3575>:10]  | [17:17:11.480] Write lock \
owner: null  | 

Both caches are configured to be transactioanal, and replicated.  Txn isolation level \
is at the default of REPEATABLE_READ.

Can you shed some light on this?

Thanks,

Chuck

View the original post : \
http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3840388#3840388

Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=3840388



-------------------------------------------------------
This SF.Net email sponsored by Black Hat Briefings & Training.
Attend Black Hat Briefings & Training, Las Vegas July 24-29 - 
digital self defense, top technical experts, no vendor pitches, 
unmatched networking opportunities. Visit www.blackhat.com
_______________________________________________
JBoss-Development mailing list
JBoss-Development@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/jboss-development


[prev in list] [next in list] [prev in thread] [next in thread]