[jboss-user] [JBoss Cache] - Why this question never been answered? lock acquisition

[Michal Glowacki]

Michal Glowacki [http://community.jboss.org/people/mglowacki] created the discussion

"Why this question never been answered? lock acquisition"

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hi,

   I am browsing the web for solution of (what can I see) common jboss cache 3.x problem of:

org.jboss.cache.lock.TimeoutException: Unable to acquire lock on Fqn [/PageCache/pop_up_76684] after [15000] milliseconds for requestor [Thread[ajp-0.0.0.0-8009-178,5,jboss]]! Lock held by [GlobalTransaction:<null>:32070]
 
+org.jboss.cache.lock.TimeoutException: Unable to acquire lock on Fqn [/PageCache/pop_up_76684] after [15000] milliseconds for requestor [Thread[ajp-0.0.0.0-8009-178,5,jboss]]! Lock held by [GlobalTransaction:<null>:32070]+
 
  I have seen some questions on the discussion boards, but noone is replied.
 
  MVCC model description state that read operations does not acquire locks - looks like something else to me. Perhaps it's a problem of eviction config? I did not define any (is there default one?) and number of nodes is around 20k, attributes like 45k. Possible that look up takes more than lock acquisition timeout?
 
Regards,
Michal
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