Deleting subproject from multiproject can corrupt database

I have a few project with multiple modules. When I load one of these projects, I delete the subprojects and remove the --non-recursive flag from the parent project. Frequently (~30% of the time) deleting the subproject corrupts the continuum database. After the delete, the parent project is listed twice, any attempt to remove either of the duplicate parent project listings will fail with an exception.

ognl.MethodFailedException: Method "removeProject" failed for object org.apache.maven.continuum.DefaultContinuum@1e8e5a7 [javax.jdo.JDOUserException: One or more instances could not be deleted
NestedThrowables:
javax.jdo.JDODataStoreException: Delete request failed: DELETE FROM BUILDDEFINITION WHERE ID = ?
NestedThrowables:
SQL Exception: DELETE on table 'BUILDDEFINITION' caused a violation of foreign key constraint 'PROJECT_BUILP8_FK2' for key (1). The statement has been rolled back.]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:796)
at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:61)
at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:819)
at ognl.ASTMethod.getValueBody(ASTMethod.java:75)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:378)
at ognl.Ognl.getValue(Ognl.java:357)
at org.codehaus.plexus.formica.action.DeleteEntity.uponSuccessfulValidation(DeleteEntity.java:57)
at org.codehaus.plexus.formica.action.DeleteEntity.execute(DeleteEntity.java:47)
at org.codehaus.plexus.summit.pipeline.valve.ActionValve.invoke(ActionValve.java:68)
at org.codehaus.plexus.summit.pipeline.AbstractPipeline.invoke(AbstractPipeline.java:70)
at org.codehaus.plexus.summit.Summit.doGet(Summit.java:54)
at org.codehaus.plexus.summit.Summit.doPost(Summit.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:615)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
/-- Encapsulated exception ------------\
javax.jdo.JDOUserException: One or more instances could not be deleted
at org.jpox.AbstractPersistenceManager.deletePersistentAll(AbstractPersistenceManager.java:1438)
at org.jpox.store.rdbms.scostore.ElementContainerStore.clear(ElementContainerStore.java:595)
at org.jpox.store.mapping.CollectionMapping.preDelete(CollectionMapping.java:304)
at org.jpox.store.mapping.CollectionMapping.deleteDependent(CollectionMapping.java:332)
at org.jpox.store.rdbms.table.ClassTable.deleteDependent(ClassTable.java:2280)
at org.jpox.store.StoreManager.deleteDependent(StoreManager.java:838)
at org.jpox.state.StateManagerImpl.deletePersistent(StateManagerImpl.java:4049)
at org.jpox.AbstractPersistenceManager.internalDeletePersistent(AbstractPersistenceManager.java:1391)
at org.jpox.AbstractPersistenceManager.deletePersistent(AbstractPersistenceManager.java:1402)
at org.codehaus.plexus.jdo.PlexusJdoUtils.removeObject(PlexusJdoUtils.java:53)
at org.apache.maven.continuum.store.JdoContinuumStore.removeObject(JdoContinuumStore.java:969)
at org.apache.maven.continuum.store.JdoContinuumStore.removeProject(JdoContinuumStore.java:901)
at org.apache.maven.continuum.DefaultContinuum.removeProject(DefaultContinuum.java:328)
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:585)
at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:491)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:785)
at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:61)
at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:819)
at ognl.ASTMethod.getValueBody(ASTMethod.java:75)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:378)
at ognl.Ognl.getValue(Ognl.java:357)
at org.codehaus.plexus.formica.action.DeleteEntity.uponSuccessfulValidation(DeleteEntity.java:57)
at org.codehaus.plexus.formica.action.DeleteEntity.execute(DeleteEntity.java:47)
at org.codehaus.plexus.summit.pipeline.valve.ActionValve.invoke(ActionValve.java:68)
at org.codehaus.plexus.summit.pipeline.AbstractPipeline.invoke(AbstractPipeline.java:70)
at org.codehaus.plexus.summit.Summit.doGet(Summit.java:54)
at org.codehaus.plexus.summit.Summit.doPost(Summit.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:615)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
NestedThrowablesStackTrace:
javax.jdo.JDODataStoreException: Delete request failed: DELETE FROM BUILDDEFINITION WHERE ID = ?
at org.jpox.store.rdbms.request.DeleteRequest.execute(DeleteRequest.java:259)
at org.jpox.store.rdbms.table.ClassTable.delete(ClassTable.java:2238)
at org.jpox.store.StoreManager.delete(StoreManager.java:800)
at org.jpox.state.StateManagerImpl.internalDeletePersistent(StateManagerImpl.java:4113)
at org.jpox.state.StateManagerImpl.deletePersistent(StateManagerImpl.java:4068)
at org.jpox.AbstractPersistenceManager.internalDeletePersistent(AbstractPersistenceManager.java:1391)
at org.jpox.AbstractPersistenceManager.deletePersistentAll(AbstractPersistenceManager.java:1429)
at org.jpox.store.rdbms.scostore.ElementContainerStore.clear(ElementContainerStore.java:595)
at org.jpox.store.mapping.CollectionMapping.preDelete(CollectionMapping.java:304)
at org.jpox.store.mapping.CollectionMapping.deleteDependent(CollectionMapping.java:332)
at org.jpox.store.rdbms.table.ClassTable.deleteDependent(ClassTable.java:2280)
at org.jpox.store.StoreManager.deleteDependent(StoreManager.java:838)
at org.jpox.state.StateManagerImpl.deletePersistent(StateManagerImpl.java:4049)
at org.jpox.AbstractPersistenceManager.internalDeletePersistent(AbstractPersistenceManager.java:1391)
at org.jpox.AbstractPersistenceManager.deletePersistent(AbstractPersistenceManager.java:1402)
at org.codehaus.plexus.jdo.PlexusJdoUtils.removeObject(PlexusJdoUtils.java:53)
at org.apache.maven.continuum.store.JdoContinuumStore.removeObject(JdoContinuumStore.java:969)
at org.apache.maven.continuum.store.JdoContinuumStore.removeProject(JdoContinuumStore.java:901)
at org.apache.maven.continuum.DefaultContinuum.removeProject(DefaultContinuum.java:328)
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:585)
at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:491)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:785)
at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:61)
at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:819)
at ognl.ASTMethod.getValueBody(ASTMethod.java:75)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:378)
at ognl.Ognl.getValue(Ognl.java:357)
at org.codehaus.plexus.formica.action.DeleteEntity.uponSuccessfulValidation(DeleteEntity.java:57)
at org.codehaus.plexus.formica.action.DeleteEntity.execute(DeleteEntity.java:47)
at org.codehaus.plexus.summit.pipeline.valve.ActionValve.invoke(ActionValve.java:68)
at org.codehaus.plexus.summit.pipeline.AbstractPipeline.invoke(AbstractPipeline.java:70)
at org.codehaus.plexus.summit.Summit.doGet(Summit.java:54)
at org.codehaus.plexus.summit.Summit.doPost(Summit.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:615)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
NestedThrowablesStackTrace:
ERROR 23503: DELETE on table 'BUILDDEFINITION' caused a violation of foreign key constraint 'PROJECT_BUILP8_FK2' for key (1). The statement has been rolled back.
at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
at org.apache.derby.impl.sql.execute.ReferencedKeyRIChecker.doCheck(Unknown Source)
at org.apache.derby.impl.sql.execute.RISetChecker.doPKCheck(Unknown Source)
at org.apache.derby.impl.sql.execute.DeleteResultSet.collectAffectedRows(Unknown Source)
at org.apache.derby.impl.sql.execute.DeleteResultSet.open(Unknown Source)
at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedPreparedStatement.execute(Unknown Source)
at org.jpox.store.rdbms.request.Request.executeUpdate(Request.java:78)
at org.jpox.store.rdbms.request.DeleteRequest.execute(DeleteRequest.java:245)
at org.jpox.store.rdbms.table.ClassTable.delete(ClassTable.java:2238)
at org.jpox.store.StoreManager.delete(StoreManager.java:800)
at org.jpox.state.StateManagerImpl.internalDeletePersistent(StateManagerImpl.java:4113)
at org.jpox.state.StateManagerImpl.deletePersistent(StateManagerImpl.java:4068)
at org.jpox.AbstractPersistenceManager.internalDeletePersistent(AbstractPersistenceManager.java:1391)
at org.jpox.AbstractPersistenceManager.deletePersistentAll(AbstractPersistenceManager.java:1429)
at org.jpox.store.rdbms.scostore.ElementContainerStore.clear(ElementContainerStore.java:595)
at org.jpox.store.mapping.CollectionMapping.preDelete(CollectionMapping.java:304)
at org.jpox.store.mapping.CollectionMapping.deleteDependent(CollectionMapping.java:332)
at org.jpox.store.rdbms.table.ClassTable.deleteDependent(ClassTable.java:2280)
at org.jpox.store.StoreManager.deleteDependent(StoreManager.java:838)
at org.jpox.state.StateManagerImpl.deletePersistent(StateManagerImpl.java:4049)
at org.jpox.AbstractPersistenceManager.internalDeletePersistent(AbstractPersistenceManager.java:1391)
at org.jpox.AbstractPersistenceManager.deletePersistent(AbstractPersistenceManager.java:1402)
at org.codehaus.plexus.jdo.PlexusJdoUtils.removeObject(PlexusJdoUtils.java:53)
at org.apache.maven.continuum.store.JdoContinuumStore.removeObject(JdoContinuumStore.java:969)
at org.apache.maven.continuum.store.JdoContinuumStore.removeProject(JdoContinuumStore.java:901)
at org.apache.maven.continuum.DefaultContinuum.removeProject(DefaultContinuum.java:328)
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:585)
at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:491)
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:785)
at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:61)
at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:819)
at ognl.ASTMethod.getValueBody(ASTMethod.java:75)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at ognl.Ognl.getValue(Ognl.java:378)
at ognl.Ognl.getValue(Ognl.java:357)
at org.codehaus.plexus.formica.action.DeleteEntity.uponSuccessfulValidation(DeleteEntity.java:57)
at org.codehaus.plexus.formica.action.DeleteEntity.execute(DeleteEntity.java:47)
at org.codehaus.plexus.summit.pipeline.valve.ActionValve.invoke(ActionValve.java:68)
at org.codehaus.plexus.summit.pipeline.AbstractPipeline.invoke(AbstractPipeline.java:70)
at org.codehaus.plexus.summit.Summit.doGet(Summit.java:54)
at org.codehaus.plexus.summit.Summit.doPost(Summit.java:108)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:615)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
at org.mortbay.http.HttpServer.service(HttpServer.java:879)
at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)
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