Grzegorz Jamka [http://community.jboss.org/people/scottgj] created the discussion "NullPointer in PojoCache" To view the discussion, visit: http://community.jboss.org/message/635673#635673 -------------------------------------------------------------- Hi, Versions: JBossCache - 3.1.0.GA PojoCache - 3.0.0.GA During my endurance tests I get such exceptions 1) org.jboss.cache.pojo.PojoCacheException: detach failed /parlayRa/TEST_NODES/18-12883         at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:134)         at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:221)         at org.mobicents.slee.resource.parlay.util.replication.CacheBase.removeObject(CacheBase.java:74)         at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody0(TestRemovePojoCache.java:14)         at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody1$advice(TestRemovePojoCache.java:96)         at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove(TestRemovePojoCache.java:1)         at pl.ivmx.pojocache.PeriodicCacheLoader.run(PeriodicCacheLoader.java:72)         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)         at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)         at java.util.concurrent.FutureTask.run(FutureTask.java:138)         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)         at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException         at org.jboss.cache.pojo.impl.InternalHelper.cleanUp(InternalHelper.java:261)         at org.jboss.cache.pojo.impl.PojoCacheDelegate.removeObject(PojoCacheDelegate.java:264)         at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:126)         ... 12 more 2) org.jboss.cache.pojo.PojoCacheException: detach failed /parlayRa/TEST_NODES/2-67790         at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:134)         at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:221)         at org.mobicents.slee.resource.parlay.util.replication.CacheBase.removeObject(CacheBase.java:74)         at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody0(TestRemovePojoCache.java:14)         at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove_aroundBody1$advice(TestRemovePojoCache.java:96)         at pl.ivmx.pojocache.cache.TestRemovePojoCache.remove(TestRemovePojoCache.java:1)         at pl.ivmx.pojocache.PeriodicCacheLoader.run(PeriodicCacheLoader.java:72)         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)         at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)         at java.util.concurrent.FutureTask.run(FutureTask.java:138)         at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)         at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException         at org.jboss.cache.pojo.impl.InternalHelper.isMultipleReferenced(InternalHelper.java:180)         at org.jboss.cache.pojo.impl.ObjectGraphHandler.isMultipleReferenced(ObjectGraphHandler.java:79)         at org.jboss.cache.pojo.impl.PojoCacheDelegate.removeObject(PojoCacheDelegate.java:253)         at org.jboss.cache.pojo.impl.PojoCacheImpl.detach(PojoCacheImpl.java:126)         ... 12 more Does enybody know why? How to reporoduce error: To start a test you have to: 1) Copy pojo cache configuration on two nodes (I have cluster comprised from two nodes in LAN) 1a) My JVM config (on both nodes): JAVA_OPTS="-Xms1200m -Xmx1200m -XX:NewSize=150m -XX:MaxNewSize=150m -XX:MaxPermSize=128m -XX:SurvivorRatio=15 -XX:+UseTLAB -XX:TLABSize=64k -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:MaxTenuringThreshold=32 -XX:CMSInitiatingOccupancyFraction=66" 1b) 2) Deploy web app on one of node 3) Go to web app web page http://firstnode_ip:8080/pojocache-load-test/index http://firstnode_ip:8080/pojocache-load-test/index 4) Choose section h4. Test with all remove operations running constantly. and enter values: Number of members per second: 500 Object live time in ms: 180000 and Run test. Error should be shown after memory allocated on heap reachs its upper limit (from top totally allocated memory shows about 1.6GB) Best regards, Grzegorz Jamka -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/635673#635673] Start a new discussion in JBoss Cache at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]