[JCR-2026] DbDataStore: garbage collection deadlock

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.2.10, 2.3
• Component/s: jackrabbit-core
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 16/Mar/09 15:24
• Updated: 16/Nov/11 13:19
• Resolved: 12/May/11 12:49

Description

Sometimes, the unit tests hangs with the following threads blocked. It looks like a database level deadlock caused by the DbDataStore implementation. The database used is Apache Derby.

org.apache.jackrabbit.core.data.db.DbDataStore.addRecord line=298
org.apache.jackrabbit.core.value.BLOBInDataStore.getInstance line=120
org.apache.jackrabbit.core.value.InternalValue.getBLOBFileValue line=644
org.apache.jackrabbit.core.value.InternalValue.create line=123
org.apache.jackrabbit.core.PropertyImpl.setValue line=609
org.apache.jackrabbit.core.PropertyImpl.setValue line=525
org.apache.jackrabbit.core.NodeImpl.setProperty line=2312
org.apache.jackrabbit.core.data.CopyValueTest.doTestCopy line=64
org.apache.jackrabbit.core.data.CopyValueTest.testCopyStream line=45

org.apache.jackrabbit.core.data.db.DbDataStore.updateLastModifiedDate line=641
org.apache.jackrabbit.core.data.db.DbDataStore.touch line=631
org.apache.jackrabbit.core.data.db.DbDataStore.getRecord line=484
org.apache.jackrabbit.core.value.BLOBInDataStore.getDataRecord line=136
org.apache.jackrabbit.core.value.BLOBInDataStore.getLength line=92
org.apache.jackrabbit.core.data.GarbageCollector.scanPersistenceManagers
org.apache.jackrabbit.core.data.GarbageCollector.scan line=161
org.apache.jackrabbit.core.data.GCThread.run line=52