Hey guys, I have all my plugin tests passing except for one. I'm not sure if it's a bug in OpenJPA or in my code. When I'm recursively fetching entities, I will occasionally get this error.
<openjpa-2.1.0-r422266:1071316 nonfatal general error> org.apache.openjpa.util.GeneralException: null at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:1003) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:897) at com.datastax.hectorjpa.meta.ToOneColumn.readField(ToOneColumn.java:127) at com.datastax.hectorjpa.store.EntityFacade.loadColumns(EntityFacade.java:237) at com.datastax.hectorjpa.store.CassandraStore.getObject(CassandraStore.java:97) at com.datastax.hectorjpa.store.CassandraStoreManager.load(CassandraStoreManager.java:160) at org.apache.openjpa.kernel.DelegatingStoreManager.load(DelegatingStoreManager.java:117) at org.apache.openjpa.kernel.ROPStoreManager.load(ROPStoreManager.java:78) at org.apache.openjpa.kernel.StateManagerImpl.loadFields(StateManagerImpl.java:3061) at org.apache.openjpa.kernel.StateManagerImpl.loadField(StateManagerImpl.java:3135) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1738) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1628) at org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:915) at org.apache.openjpa.kernel.ManagedCache.dirtyCheck(ManagedCache.java:302) at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:4029) at org.apache.openjpa.kernel.BrokerImpl.addToTransaction(BrokerImpl.java:4101) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:274) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:381) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:333) at com.datastax.hectorjpa.store.CassandraStoreManager.initialize(CassandraStoreManager.java:143) at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57) at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1022) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:980) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:897) at com.datastax.hectorjpa.meta.ToOneColumn.readField(ToOneColumn.java:127) at com.datastax.hectorjpa.store.EntityFacade.loadColumns(EntityFacade.java:237) at com.datastax.hectorjpa.store.CassandraStore.getObject(CassandraStore.java:97) at com.datastax.hectorjpa.store.CassandraStoreManager.load(CassandraStoreManager.java:160) at org.apache.openjpa.kernel.DelegatingStoreManager.load(DelegatingStoreManager.java:117) at org.apache.openjpa.kernel.ROPStoreManager.load(ROPStoreManager.java:78) at org.apache.openjpa.kernel.StateManagerImpl.loadFields(StateManagerImpl.java:3061) at org.apache.openjpa.kernel.StateManagerImpl.loadField(StateManagerImpl.java:3135) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1738) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1628) at org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:915) at org.apache.openjpa.kernel.ManagedCache.dirtyCheck(ManagedCache.java:302) at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:4029) at org.apache.openjpa.kernel.BrokerImpl.addToTransaction(BrokerImpl.java:4101) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:274) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:381) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:333) at com.datastax.hectorjpa.store.CassandraStoreManager.initialize(CassandraStoreManager.java:143) at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57) at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1022) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:980) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:897) at com.datastax.hectorjpa.meta.ToOneColumn.readField(ToOneColumn.java:127) at com.datastax.hectorjpa.store.EntityFacade.loadColumns(EntityFacade.java:237) at com.datastax.hectorjpa.store.CassandraStore.getObject(CassandraStore.java:97) at com.datastax.hectorjpa.store.CassandraStoreManager.load(CassandraStoreManager.java:160) at org.apache.openjpa.kernel.DelegatingStoreManager.load(DelegatingStoreManager.java:117) at org.apache.openjpa.kernel.ROPStoreManager.load(ROPStoreManager.java:78) at org.apache.openjpa.kernel.StateManagerImpl.loadFields(StateManagerImpl.java:3061) at org.apache.openjpa.kernel.StateManagerImpl.loadField(StateManagerImpl.java:3135) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1738) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1628) at org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:915) at org.apache.openjpa.kernel.ManagedCache.dirtyCheck(ManagedCache.java:302) at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:4029) at org.apache.openjpa.kernel.BrokerImpl.setDirty(BrokerImpl.java:4146) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:278) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1701) at org.apache.openjpa.kernel.StateManagerImpl.dirty(StateManagerImpl.java:1628) at org.apache.openjpa.kernel.StateManagerImpl.dirtyCheck(StateManagerImpl.java:915) at org.apache.openjpa.kernel.ManagedCache.dirtyCheck(ManagedCache.java:302) at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:4029) at org.apache.openjpa.kernel.BrokerImpl.addToTransaction(BrokerImpl.java:4101) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:274) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:381) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:333) at com.datastax.hectorjpa.store.CassandraStoreManager.initialize(CassandraStoreManager.java:143) at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57) at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1022) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:980) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:897) at com.datastax.hectorjpa.meta.ToOneColumn.readField(ToOneColumn.java:127) at com.datastax.hectorjpa.store.EntityFacade.loadColumns(EntityFacade.java:237) at com.datastax.hectorjpa.store.CassandraStore.getObject(CassandraStore.java:97) at com.datastax.hectorjpa.store.CassandraStoreManager.initialize(CassandraStoreManager.java:145) at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57) at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1022) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:980) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:897) at com.datastax.hectorjpa.meta.collection.OrderedCollectionField.readField(OrderedCollectionField.java:123) at com.datastax.hectorjpa.store.EntityFacade.loadColumns(EntityFacade.java:213) at com.datastax.hectorjpa.store.CassandraStore.getObject(CassandraStore.java:97) at com.datastax.hectorjpa.store.CassandraStoreManager.load(CassandraStoreManager.java:160) at org.apache.openjpa.kernel.DelegatingStoreManager.load(DelegatingStoreManager.java:117) at org.apache.openjpa.kernel.ROPStoreManager.load(ROPStoreManager.java:78) at org.apache.openjpa.kernel.StateManagerImpl.loadFields(StateManagerImpl.java:3061) at org.apache.openjpa.kernel.StateManagerImpl.loadField(StateManagerImpl.java:3135) at org.apache.openjpa.kernel.StateManagerImpl.fetchObjectField(StateManagerImpl.java:2383) at org.apache.openjpa.kernel.StateManagerImpl.fetchField(StateManagerImpl.java:865) at org.apache.openjpa.kernel.StateManagerImpl.fetch(StateManagerImpl.java:827) at org.apache.openjpa.enhance.RedefinitionHelper $1.invoke(RedefinitionHelper.java:230) at $Proxy20.get(Unknown Source) at com.datastax.hectorjpa.store.ManyToOneIndexTest.basicFollowingDelete(ManyToOneIndexTest.java:203) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod $1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) at java.util.HashMap$KeyIterator.next(HashMap.java:828) at org.apache.openjpa.kernel.ManagedCache.dirtyCheck(ManagedCache.java:301) at org.apache.openjpa.kernel.BrokerImpl.hasTransactionalObjects(BrokerImpl.java:4029) at org.apache.openjpa.kernel.BrokerImpl.addToTransaction(BrokerImpl.java:4101) at org.apache.openjpa.kernel.StateManagerImpl.setPCState(StateManagerImpl.java:274) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:381) at org.apache.openjpa.kernel.StateManagerImpl.initialize(StateManagerImpl.java:333) at com.datastax.hectorjpa.store.CassandraStoreManager.initialize(CassandraStoreManager.java:143) at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112) at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57) at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1022) at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:980) ... 123 more I don't get it when running in debug mode, so I think it's some sort of race condition. Any ideas what I'm doing wrong in my code? Also, with collection proxies created using OpenJPAStateManager.newProxyField(int id), I'll occasionally have fields that have been removed from the collection, but aren't returned via the change tracker's getRemoved(). Is this a know issue? Thanks, Todd -- todd SENIOR SOFTWARE ENGINEER todd nine| spidertracks ltd | 117a the square po box 5203 | palmerston north 4441 | new zealand P: +64 6 353 3395 E: t...@spidertracks.co.nz W: www.spidertracks.com