org.jboss.cache.lock.UpgradeException: upgrade lock for /lpr
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