> One potential source of problems might be the start/run sequence of the > Thread. If, for some reason, the run() method was never called then the > Thread's connection would never be called. The "problem" with this > theory is that I cannot think of any reason for start() to fail to call > run()... :).
new sample code with which i can still reproduce the problem: http://www.copypastecode.com/7560/ i've removed unnecessary comment and added sanity check: control if thread was executed. sporadically i get result in stdout.log: [06:42:55.708] start [06:42:55.709] stop [06:42:55.709] [06:42:55.709] {http--8080-27} Closing dangling connections. All connections must have a close() in a finally block. [06:42:55.709] [06:42:55.709] Closing dangling connections. All connections must have a close() in a finally block. [06:42:55.709] [06:42:55.709] {http--8080-27} java.lang.IllegalStateException: Connection null was not closed. Connections must have a close() in a finally block. [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.jca.UserTransactionImpl.abortTransaction(UserTransactionImpl.java:533) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:206) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:264) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:275) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.server.port.TcpConnection.handleRequests(TcpConnection.java:644) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.server.port.TcpConnection$AcceptTask.doAccept(TcpConnection.java:1311) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.server.port.TcpConnection$AcceptTask.run(TcpConnection.java:1252) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:866) [06:42:55.709] [06:42:55.709] {http--8080-27} at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:779) [06:42:55.709] [06:42:55.709] java.lang.IllegalStateException: Connection null was not closed. Connections must have a close() in a finally block. [06:42:55.709] at com.caucho.jca.UserTransactionImpl.abortTransaction(UserTransactionImpl.java:533) [06:42:55.709] at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:206) [06:42:55.709] at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:264) [06:42:55.709] at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:275) [06:42:55.709] at com.caucho.server.port.TcpConnection.handleRequests(TcpConnection.java:644) [06:42:55.709] at com.caucho.server.port.TcpConnection$AcceptTask.doAccept(TcpConnection.java:1311) [06:42:55.709] at com.caucho.server.port.TcpConnection$AcceptTask.run(TcpConnection.java:1252) [06:42:55.709] at com.caucho.util.ThreadPool$PoolThread.runTasks(ThreadPool.java:866) [06:42:55.709] at com.caucho.util.ThreadPool$PoolThread.run(ThreadPool.java:779) [06:42:55.710] start [06:42:55.710] stop rest is just: [06:42:55.714] stop [06:42:55.714] start [06:42:55.715] stop [06:42:55.715] start [06:42:55.716] stop [06:42:55.716] start [06:42:55.717] stop [06:42:55.717] start [06:42:55.717] stop > Just to verify that's not the problem, you could pass the DBPool as > parameter to the tread and perform the DBPool.getConnection() inside the > thread's run method, so the connection is retrieved in the same method > where you are sure it is going to be returned. if i move DBPool.getConnection() inside the thread - exception still [ rarely ] occurs: http://www.copypastecode.com/7564/ thanks for your suggestions Pawel Kudzia -- View this message in context: http://www.nabble.com/java.lang.IllegalStateException%3A-Connection-null-was-not-closed.-tp24593349p24600985.html Sent from the Resin mailing list archive at Nabble.com. _______________________________________________ resin-interest mailing list [email protected] http://maillist.caucho.com/mailman/listinfo/resin-interest
