org.eclipse.emf.cdo.util.CommitException: Rollback in DBStore: java.lang.IllegalStateException: Duplicate resource node in folder _GiPyAAWGEeiNJdKXyWeXzg: resource1
at org.eclipse.emf.cdo.server.internal.db.mapping.horizontal.AbstractHorizontalClassMapping.checkDuplicateResources(AbstractHorizontalClassMapping.java:575)
at org.eclipse.emf.cdo.server.internal.db.mapping.horizontal.HorizontalBranchingClassMapping.writeRevision(HorizontalBranchingClassMapping.java:741)
at org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.writeRevision(DBStoreAccessor.java:615)
at org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.writeRevisions(DBStoreAccessor.java:580)
at org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.writeNewObjectRevisions(DBStoreAccessor.java:564)
at org.eclipse.emf.cdo.spi.server.StoreAccessor.doWrite(StoreAccessor.java:102)
at org.eclipse.emf.cdo.server.internal.db.DBStoreAccessor.doWrite(DBStoreAccessor.java:888)
at org.eclipse.emf.cdo.spi.server.StoreAccessorBase.write(StoreAccessorBase.java:138)
at org.eclipse.emf.cdo.internal.server.TransactionCommitContext.writeAccessor(TransactionCommitContext.java:1612)
at org.eclipse.emf.cdo.internal.server.TransactionCommitContext.write(TransactionCommitContext.java:737)
at org.eclipse.emf.cdo.spi.server.InternalCommitContext$1.runLoop(InternalCommitContext.java:49)
at org.eclipse.emf.cdo.spi.server.InternalCommitContext$1.runLoop(InternalCommitContext.java:1)
at org.eclipse.net4j.util.om.monitor.ProgressDistributor.run(ProgressDistributor.java:95)
at org.eclipse.emf.cdo.internal.server.Repository.commitUnsynced(Repository.java:1204)
at org.eclipse.emf.cdo.internal.server.Repository.commit(Repository.java:1197)
at org.eclipse.emf.cdo.server.internal.net4j.protocol.CommitTransactionIndication.indicatingCommit(CommitTransactionIndication.java:316)
at org.eclipse.emf.cdo.server.internal.net4j.protocol.CommitTransactionIndication.indicating(CommitTransactionIndication.java:102)
at org.eclipse.emf.cdo.server.internal.net4j.protocol.CDOServerIndicationWithMonitoring.indicating(CDOServerIndicationWithMonitoring.java:118)
at org.eclipse.net4j.signal.IndicationWithMonitoring.indicating(IndicationWithMonitoring.java:87)
at org.eclipse.net4j.signal.IndicationWithResponse.doExtendedInput(IndicationWithResponse.java:100)
at org.eclipse.net4j.signal.Signal.doInput(Signal.java:377)
at org.eclipse.net4j.signal.IndicationWithResponse.execute(IndicationWithResponse.java:73)
at org.eclipse.net4j.signal.IndicationWithMonitoring.execute(IndicationWithMonitoring.java:66)
at org.eclipse.net4j.signal.Signal.runSync(Signal.java:283)
at org.eclipse.net4j.signal.Signal.run(Signal.java:162)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

at org.eclipse.emf.internal.cdo.transaction.CDOSingleTransactionStrategyImpl.commit(CDOSingleTransactionStrategyImpl.java:92)
at org.eclipse.emf.internal.cdo.transaction.CDOTransactionImpl.commitSynced(CDOTransactionImpl.java:1621)
at org.eclipse.emf.internal.cdo.transaction.CDOTransactionImpl.commit(CDOTransactionImpl.java:1585)
at org.eclipse.emf.internal.cdo.transaction.CDOTransactionImpl.commit(CDOTransactionImpl.java:1552)