[jboss-user] [JBossCache] - Re: Problem with concurent put/remove operation.

impy core on 1.4.1 - described in http://www.jboss.com/index.html?module=bb&op=viewtopic&t=116337 forum thread I have just tested core on 2.0.0. GA - and exception was ... timeout. stack: org.jboss.cache.lock.TimeoutException: failure acquiring lock: fqn=/a/b/c/d, caller=GlobalTransaction::4, lock=write owner=GlobalTransaction::3 (activeReaders=0, activeWriter=Thread[Thread-2,5,main], waitingReaders=0, waitingWriters=0, waitingUpgrader=0) at org.jboss.cache.lock.IdentityLock.acquire(IdentityLock.java:528) at org.jboss.cache.interceptors.PessimisticLockInterceptor$LockManager.acquire(PessimisticLockInterceptor.java:579) at org.jboss.cache.interceptors.PessimisticLockInterceptor.acquireNodeLock(PessimisticLockInterceptor.java:393) at org.jboss.cache.interceptors.PessimisticLockInterceptor.lock(PessimisticLockInterceptor.java:329) at org.jboss.cache.interceptors.PessimisticLockInterceptor.invoke(PessimisticLockInterceptor.java:187) at org.jboss.cache.interceptors.Interceptor.invoke(Interceptor.java:76) at org.jboss.cache.interceptors.NotificationInterceptor.invoke(NotificationInterceptor.java:32) (...) main loop: | for (int x = 0; x < 1000; x++) { | tm.begin(); | if (remove) { | cache.remove("/a/b/c/d"); | cache.remove("/a"); | } else { | cache.put("/a/b/c/d", "key","text" + x); | } | tm.commit(); | Thread.sleep(1); | } | one thread is putting key-value pair into /a/b/c/d node and second thread is removing this node. And now I don't known what is it: just bug or normal situation. If this is normal situation - how TimeoutException can be explained? One thread is executing only one operation in one transaction (classical deadlock needs 2 operations in one transaction...) I need to run many paraller threads, and every thread should modify exactly this same node. Which cache should be used? [I think that every cache (pojo, core, 1.4.1, 2.0.0 can be used)] Now looks that only PojoCache in version 1.4.1 works correctly in Multithread environment... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4077056#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...