[jboss-user] [JBoss Cache Users] - org.jboss.cache.lock.UpgradeException: upgrade lock for /lpr

[ravendra.gupta]

Hi All, I am using Jboss  cache 'Implementation-Version: 1.4.1.SP9'
I needed  simple functionality to store and retrive objects into cache because of memory constraints.

my design is, two  threads putting objects on a node concurrently after putting few thousands objects it throws org.jboss.cache.lock.UpgradeException  exception

  | 08:48:27,987 ERROR [LocalCache] cache put error. Key: [187885DataLoaderThread-27]. Cache: [/lpr/DataLoaderThread-27]
  | org.jboss.cache.lock.UpgradeException: failure upgrading lock: fqn=/lpr, caller=Thread[DataLoaderThread-27,5,jboss], lock=read owners=[Thread[DataLoad
  | erThread-28,5,jboss]] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=0, waitingUpgrader=0)
  |         at org.jboss.cache.Node.acquire(Node.java:517)
  |         at org.jboss.cache.interceptors.PessimisticLockInterceptor.acquireNodeLock(PessimisticLockInterceptor.java:410)
  |         at org.jboss.cache.interceptors.PessimisticLockInterceptor.lock(PessimisticLockInterceptor.java:322)
  |         at org.jboss.cache.interceptors.PessimisticLockInterceptor.invoke(PessimisticLockInterceptor.java:189)
  |         at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
  |         at org.jboss.cache.interceptors.UnlockInterceptor.invoke(UnlockInterceptor.java:32)
  |         at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
  |         at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:379)
  |         at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:174)
  |         at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
  |         at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:157)
  |         at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5919)
  |         at org.jboss.cache.TreeCache.put(TreeCache.java:3858)
  |         at org.jboss.cache.TreeCache.put(TreeCache.java:3799)
  |         at sun.reflect.GeneratedMethodAccessor213.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy185.put(Unknown Source)
  |         at com.logica.heca.lpr.cache.LocalCache.put(LocalCache.java:99)
  |         at com.logica.heca.lpr.cache.ContactVOCache.put(ContactVOCache.java:45)
  |         at com.logica.heca.lpr.dataLoader.DataLoaderThread.run(DataLoaderThread.java:169)
  | Caused by: org.jboss.cache.lock.UpgradeException: upgrade lock for /lpr could not be acquired after 50000 ms. Lock map ownership Read lock owners: [Th
  | read[DataLoaderThread-28,5,jboss]]
  | Write lock owner: null
  |  (caller=Thread[DataLoaderThread-27,5,jboss], lock info: read owners=[] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=0, waiti
  | ngUpgrader=0))
  |         at org.jboss.cache.lock.IdentityLock.acquireWriteLock(IdentityLock.java:187)
  |         at org.jboss.cache.Node.acquireWriteLock(Node.java:562)
  |         at org.jboss.cache.Node.acquire(Node.java:509)
  |         ... 26 more
  | 08:48:27,987 ERROR [DataLoaderThread] What happend?  ... we got an unexpected Exception in the worker thread [DataLoaderThread-27]. The thread termina
  | tes
  | com.logica.heca.lpr.common.exception.FatalException: Could not store object
  |         at com.logica.heca.lpr.cache.LocalCache.put(LocalCache.java:102)
  |         at com.logica.heca.lpr.cache.ContactVOCache.put(ContactVOCache.java:45)
  |         at com.logica.heca.lpr.dataLoader.DataLoaderThread.run(DataLoaderThread.java:169)
  | Caused by: org.jboss.cache.lock.UpgradeException: failure upgrading lock: fqn=/lpr, caller=Thread[DataLoaderThread-27,5,jboss], lock=read owners=[Thre
  | ad[DataLoaderThread-28,5,jboss]] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=0, waitingUpgrader=0)
  |         at org.jboss.cache.Node.acquire(Node.java:517)
  |         at org.jboss.cache.interceptors.PessimisticLockInterceptor.acquireNodeLock(PessimisticLockInterceptor.java:410)
  |         at org.jboss.cache.interceptors.PessimisticLockInterceptor.lock(PessimisticLockInterceptor.java:322)
  |         at org.jboss.cache.interceptors.PessimisticLockInterceptor.invoke(PessimisticLockInterceptor.java:189)
  |         at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
  |         at org.jboss.cache.interceptors.UnlockInterceptor.invoke(UnlockInterceptor.java:32)
  |         at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
  |         at org.jboss.cache.interceptors.TxInterceptor.handleNonTxMethod(TxInterceptor.java:379)
  |         at org.jboss.cache.interceptors.TxInterceptor.invoke(TxInterceptor.java:174)
  |         at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:68)
  |         at org.jboss.cache.interceptors.CacheMgmtInterceptor.invoke(CacheMgmtInterceptor.java:157)
  |         at org.jboss.cache.TreeCache.invokeMethod(TreeCache.java:5919)
  |         at org.jboss.cache.TreeCache.put(TreeCache.java:3858)
  |         at org.jboss.cache.TreeCache.put(TreeCache.java:3799)
  |         at sun.reflect.GeneratedMethodAccessor213.invoke(Unknown Source)
  |         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  |         at java.lang.reflect.Method.invoke(Method.java:597)
  |         at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
  |         at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
  |         at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
  |         at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
  |         at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
  |         at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
  |         at $Proxy185.put(Unknown Source)
  |         at com.logica.heca.lpr.cache.LocalCache.put(LocalCache.java:99)
  |         ... 2 more
  | Caused by: org.jboss.cache.lock.UpgradeException: upgrade lock for /lpr could not be acquired after 50000 ms. Lock map ownership Read lock owners: [Th
  | read[DataLoaderThread-28,5,jboss]]
  | Write lock owner: null
  |  (caller=Thread[DataLoaderThread-27,5,jboss], lock info: read owners=[] (activeReaders=1, activeWriter=null, waitingReaders=0, waitingWriters=0, waiti
  | ngUpgrader=0))
  |         at org.jboss.cache.lock.IdentityLock.acquireWriteLock(IdentityLock.java:187)
  |         at org.jboss.cache.Node.acquireWriteLock(Node.java:562)
  |         at org.jboss.cache.Node.acquire(Node.java:509)
  |         ... 26 more
  | 
  | 

cache config file :


<mbean code="org.jboss.cache.TreeCache" name="logica_lpr:service=LocalCache">
  |        <attribute name="IsolationLevel">REPEATABLE_READ</attribute>
  |        <attribute name="LockParentForChildInsertRemove">true</attribute>
  |         <attribute name="LockAcquisitionTimeout">50000</attribute>
  | 
  | 
  |         <attribute name="CacheMode">LOCAL</attribute>
  |        <attribute name="EvictionPolicyClass">org.jboss.cache.eviction.ElementSizePolicy</attribute>
  |       <!-- Specific eviction policy configurations. This is LRU -->
  |       <attribute name="EvictionPolicyConfig">
  |          <config>
  |             <attribute name="wakeUpIntervalSeconds">1</attribute>
  |             <!-- Cache wide default -->
  |             <region name="/_default_">
  |                <attribute name="maxNodes">2</attribute>
  |                <attribute name="maxElementsPerNode">15000</attribute>
  |             </region>
  |        
  |          </config>
  |       </attribute>
  |     </mbean>

any help from anybody would be highly appreciable

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