Re: NPE in ERXObjectStoreCoordinatorSynchronizer
Looks like eo.editingContext() == null but beyond that… From: on behalf of Paul Hoadley Date: Monday, October 24, 2016 at 3:45 PM To: WebObjects Development Subject: Re: NPE in ERXObjectStoreCoordinatorSynchronizer On 19 Oct 2016, at 1:12 PM, Paul Hoadley mailto:pa...@logicsquad.net>> wrote: Oct 17 23:10:57 Relief[2002] ERROR er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer - java.lang.NullPointerException NullPointerException at com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1270) at er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:385) at com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614) at er.extensions.eof.ERXGenericRecord$TouchingBinding.valueInObject(ERXGenericRecord.java:214) at com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634) at net.logicsquad.relief.model._Job.classTeacher(_Job.java:192) ... skipped 6 stack elements at er.extensions.eof.ERXGenericRecord$InverseRelationshipUpdater.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1367) at er.extensions.eof.ERXGenericRecord.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1225) at net.logicsquad.relief.model._ClassTeacher.addToJobs(_ClassTeacher.java:212) ... skipped 5 stack elements at com.webobjects.eocontrol.EOCustomObject.addObjectToPropertyWithKey(EOCustomObject.java:940) at com.webobjects.eocontrol.EOEditingContext._mergeValueForKey(EOEditingContext.java:660) at com.webobjects.eocontrol.EOEditingContext._mergeObjectWithChanges(EOEditingContext.java:3457) at com.webobjects.eocontrol.EOEditingContext._processObjectStoreChanges(EOEditingContext.java:3546) at er.extensions.eof.ERXEC._processObjectStoreChanges(ERXEC.java:1549) ... skipped 5 stack elements at com.webobjects.eocontrol.EOEditingContext._sendOrEnqueueNotification(EOEditingContext.java:4715) at com.webobjects.eocontrol.EOEditingContext._objectsChangedInStore(EOEditingContext.java:3562) at er.extensions.eof.ERXEC._objectsChangedInStore(ERXEC.java:1489) ... skipped 7 stack elements at com.webobjects.eocontrol.EOObjectStoreCoordinator._objectsChangedInSubStore(EOObjectStoreCoordinator.java:693) ... skipped 7 stack elements at er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue$ToManyUpdateCacheChangeProcessor.processCacheChange(ERXObjectStoreCoordinatorSynchronizer.java:466) at er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue.processRemoteChange(ERXObjectStoreCoordinatorSynchronizer.java:566) at er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue.run(ERXObjectStoreCoordinatorSynchronizer.java:622) ... skipped 1 stack elements Does anyone want to take a guess at this one? Come on, I know you want to. -- Paul Hoadley http://logicsquad.net/ ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NPE in ERXObjectStoreCoordinatorSynchronizer
On 19 Oct 2016, at 1:12 PM, Paul Hoadley wrote: > Oct 17 23:10:57 Relief[2002] ERROR > er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer - > java.lang.NullPointerException > NullPointerException > at > com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1270) > at > er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:385) > at > com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614) > at > er.extensions.eof.ERXGenericRecord$TouchingBinding.valueInObject(ERXGenericRecord.java:214) > at > com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634) > at net.logicsquad.relief.model._Job.classTeacher(_Job.java:192) > ... skipped 6 stack elements > at > er.extensions.eof.ERXGenericRecord$InverseRelationshipUpdater.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1367) > at > er.extensions.eof.ERXGenericRecord.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1225) > at > net.logicsquad.relief.model._ClassTeacher.addToJobs(_ClassTeacher.java:212) > ... skipped 5 stack elements > at > com.webobjects.eocontrol.EOCustomObject.addObjectToPropertyWithKey(EOCustomObject.java:940) > at > com.webobjects.eocontrol.EOEditingContext._mergeValueForKey(EOEditingContext.java:660) > at > com.webobjects.eocontrol.EOEditingContext._mergeObjectWithChanges(EOEditingContext.java:3457) > at > com.webobjects.eocontrol.EOEditingContext._processObjectStoreChanges(EOEditingContext.java:3546) > at er.extensions.eof.ERXEC._processObjectStoreChanges(ERXEC.java:1549) > ... skipped 5 stack elements > at > com.webobjects.eocontrol.EOEditingContext._sendOrEnqueueNotification(EOEditingContext.java:4715) > at > com.webobjects.eocontrol.EOEditingContext._objectsChangedInStore(EOEditingContext.java:3562) > at er.extensions.eof.ERXEC._objectsChangedInStore(ERXEC.java:1489) > ... skipped 7 stack elements > at > com.webobjects.eocontrol.EOObjectStoreCoordinator._objectsChangedInSubStore(EOObjectStoreCoordinator.java:693) > ... skipped 7 stack elements > at > er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue$ToManyUpdateCacheChangeProcessor.processCacheChange(ERXObjectStoreCoordinatorSynchronizer.java:466) > at > er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue.processRemoteChange(ERXObjectStoreCoordinatorSynchronizer.java:566) > at > er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue.run(ERXObjectStoreCoordinatorSynchronizer.java:622) > ... skipped 1 stack elements > Does anyone want to take a guess at this one? Come on, I know you want to. -- Paul Hoadley http://logicsquad.net/ ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NPE in ERXObjectStoreCoordinatorSynchronizer
Hello, I seem to be starting a number of posts in this way, but… I’m seeing very occasional stack traces from the wild that look like this: Oct 17 23:10:57 Relief[2002] ERROR er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer - java.lang.NullPointerException NullPointerException at com.webobjects.eocontrol.EOCustomObject.willReadRelationship(EOCustomObject.java:1270) at er.extensions.eof.ERXGenericRecord.willReadRelationship(ERXGenericRecord.java:385) at com.webobjects.eocontrol._EOMutableKnownKeyDictionary$Initializer$_LazyGenericRecordBinding.valueInObject(_EOMutableKnownKeyDictionary.java:614) at er.extensions.eof.ERXGenericRecord$TouchingBinding.valueInObject(ERXGenericRecord.java:214) at com.webobjects.eocontrol.EOCustomObject.storedValueForKey(EOCustomObject.java:1634) at net.logicsquad.relief.model._Job.classTeacher(_Job.java:192) ... skipped 6 stack elements at er.extensions.eof.ERXGenericRecord$InverseRelationshipUpdater.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1367) at er.extensions.eof.ERXGenericRecord.includeObjectIntoPropertyWithKey(ERXGenericRecord.java:1225) at net.logicsquad.relief.model._ClassTeacher.addToJobs(_ClassTeacher.java:212) ... skipped 5 stack elements at com.webobjects.eocontrol.EOCustomObject.addObjectToPropertyWithKey(EOCustomObject.java:940) at com.webobjects.eocontrol.EOEditingContext._mergeValueForKey(EOEditingContext.java:660) at com.webobjects.eocontrol.EOEditingContext._mergeObjectWithChanges(EOEditingContext.java:3457) at com.webobjects.eocontrol.EOEditingContext._processObjectStoreChanges(EOEditingContext.java:3546) at er.extensions.eof.ERXEC._processObjectStoreChanges(ERXEC.java:1549) ... skipped 5 stack elements at com.webobjects.eocontrol.EOEditingContext._sendOrEnqueueNotification(EOEditingContext.java:4715) at com.webobjects.eocontrol.EOEditingContext._objectsChangedInStore(EOEditingContext.java:3562) at er.extensions.eof.ERXEC._objectsChangedInStore(ERXEC.java:1489) ... skipped 7 stack elements at com.webobjects.eocontrol.EOObjectStoreCoordinator._objectsChangedInSubStore(EOObjectStoreCoordinator.java:693) ... skipped 7 stack elements at er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue$ToManyUpdateCacheChangeProcessor.processCacheChange(ERXObjectStoreCoordinatorSynchronizer.java:466) at er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue.processRemoteChange(ERXObjectStoreCoordinatorSynchronizer.java:566) at er.extensions.eof.ERXObjectStoreCoordinatorSynchronizer$ProcessChangesQueue.run(ERXObjectStoreCoordinatorSynchronizer.java:622) ... skipped 1 stack elements We’re running an app here using ERJGroupsSynchronizer, (very) slightly modified to work in an AWS EC2 environment. The app sees what you’d have to describe as a low level of concurrency. What I assume I’m seeing above is an instance processing an incoming change notification, and hitting an NPE. This is EOCustomObject at 1270: ec.lockObjectStore(); So some EC has presumably turned to null. What happens next is that that instance seems to see (or at least process) no further change notifications, and its view of the database gets stale in the usual way. Does anyone want to take a guess at this one? -- Paul Hoadley http://logicsquad.net/ ___ Do not post admin requests to the list. They will be ignored. Webobjects-dev mailing list (Webobjects-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/webobjects-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com