[ http://issues.apache.org/jira/browse/GERONIMO-1062?page=comments#action_12349905 ]
David Jencks commented on GERONIMO-1062: ---------------------------------------- Patch to the callback filter was applied for GERONIMO-1104. I don't understand the concern over loading a single proxy instance "permanently" in an application that doesn't manage its own classloaders. Such an application will also load the ejb home and remote interfaces from the same classloader and these interfaces will be equally permanent, even if the ejb is only used once during startup. If you need to release the proxy, you can load the ejb interfaces in a disposable classloader as well, and get rid of all of them at once. > OpenEJB client leaks memory on each JNDI lookup. Get OutOfMemoryException > after a few thousand lookups > ------------------------------------------------------------------------------------------------------- > > Key: GERONIMO-1062 > URL: http://issues.apache.org/jira/browse/GERONIMO-1062 > Project: Geronimo > Type: Bug > Components: OpenEJB > Versions: 1.0-M5, 1.0-M4 > Environment: Windows XP > j2sdk1.4.2_08 > Reporter: John Sisson > Priority: Critical > Fix For: 1.0 > Attachments: AllObjects.zip, CgLibProxyFactory.java.patch, apps.zip > > I have a standalone java application that uses OpenEJB's JNDI implementation > (org.openejb.client.RemoteInitialContextFactory ). It appears that each JNDI > lookup of an EJB is leaking memory and it looks like it is related to cglib. > I have attached to this JIRA a simple EJB and standalone java client > application that can be used to reproduce the problem. > Extract the zip file to the geronimo\sandbox directory > cd sandbox\echoTest > maven -o > deploy the echoTest.ear file in the sandbox\echoTest\target directory > cd sandbox\echoTestStandaloneClient > maven -o > cd target > java -jar echoTestStandaloneClient-0.1-SNAPSHOT.jar > The console will be updated with the number of lookups performed. E.G here > are a few examples with different JVM settings: > C:\OpenSourceJava\geronimo\trunk\sandbox\echoTestStandaloneClient>set > JAVA_HOME=C:\Program Files\Java\j2sdk1.4.2_08 > C:\OpenSourceJava\geronimo\trunk\sandbox\echoTestStandaloneClient>"%JAVA_HOME%"\bin\java.exe > -jar target\echoTestStandaloneClient-0. > 1-SNAPSHOT.jar > After 0 lookups: delta: 1,911,024, free: 1,911,024, used: 120,592, total: > 2,031,616, max: 66,650,112 > After 1000 lookups: delta: 417,040, free: 2,328,064, used: 2,603,520, total: > 4,931,584, max: 66,650,112 > After 2000 lookups: delta: 1,765,304, free: 4,093,368, used: 5,151,304, > total: 9,244,672, max: 66,650,112 > After 3000 lookups: delta: 1,759,288, free: 5,852,656, used: 7,303,696, > total: 13,156,352, max: 66,650,112 > After 4000 lookups: delta: 2,182,664, free: 8,035,320, used: 10,081,288, > total: 18,116,608, max: 66,650,112 > After 5000 lookups: delta: 1,579,184, free: 9,614,504, used: 11,574,104, > total: 21,188,608, max: 66,650,112 > Lookups performed: 5432 > Exception in thread "main" net.sf.cglib.core.CodeGenerationException: > java.lang.reflect.InvocationTargetExce > ption-->null > at > net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:237) > at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377) > at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:304) > at > org.openejb.client.CgLibProxyFactory.newProxyInstance(CgLibProxyFactory.java:92) > at > org.openejb.client.CgLibProxyFactory.newProxyInstance(CgLibProxyFactory.java:81) > at > org.openejb.client.ProxyManager.newProxyInstance(ProxyManager.java:90) > at > org.openejb.client.EJBHomeHandler.createEJBHomeProxy(EJBHomeHandler.java:106) > at > org.openejb.client.JNDIContext.createEJBHomeProxy(JNDIContext.java:212) > at org.openejb.client.JNDIContext.lookup(JNDIContext.java:245) > at javax.naming.InitialContext.lookup(InitialContext.java:347) > at > org.acme.EchoTestStandaloneClient.testLookup(EchoTestStandaloneClient.java:87) > at > org.acme.EchoTestStandaloneClient.main(EchoTestStandaloneClient.java:76) > Caused by: java.lang.reflect.InvocationTargetException > at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:324) > at net.sf.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:384) > at > net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:219) > ... 11 more > Caused by: java.lang.OutOfMemoryError > If I try this on JDK 1.5.0_05, it is worse as the JVM becomes unresponsive > and uses a lot of CPU and I have to kill the JVM: > C:\OpenSourceJava\geronimo\trunk\sandbox\echoTestStandaloneClient>java -jar > target\echoTestStandaloneClient-0.1-SNAPSHOT.jar > After 0 lookups: delta: 1,863,336, free: 1,863,336, used: 168,280, total: > 2,031,616, max: 66,650,112 > After 1000 lookups: delta: 482,408, free: 2,345,744, used: 2,684,144, total: > 5,029,888, max: 66,650,112 > After 2000 lookups: delta: 1,865,064, free: 4,210,808, used: 5,267,336, > total: 9,478,144, max: 66,650,112 > After 3000 lookups: delta: 2,116,488, free: 6,327,296, used: 7,967,744, > total: 14,295,040, max: 66,650,112 > After 4000 lookups: delta: 2,007,008, free: 8,334,304, used: 10,499,104, > total: 18,833,408, max: 66,650,112 > After 5000 lookups: delta: 2,094,096, free: 10,428,400, used: 13,164,560, > total: 23,592,960, max: 66,650,112 > Lookups performed: 5099 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
