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java.util.ConcurrentModificationException: 	at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)	at java.util.AbstractList$Itr.next(AbstractList.java:343)	at java.util.AbstractList.equals(AbstractList.java:505)	at com.tc.object.tx.TransactionBatchWriter$FoldingKey.canAcceptFold(TransactionBatchWriter.java:615)	at com.tc.object.tx.TransactionBatchWriter.getOrCreateBuffer(TransactionBatchWriter.java:191)	at com.tc.object.tx.TransactionBatchWriter.addTransaction(TransactionBatchWriter.java:278)	at com.tc.object.tx.TransactionSequencer.addTransactionToBatch(TransactionSequencer.java:86)	at com.tc.object.tx.TransactionSequencer.addTxnInternal(TransactionSequencer.java:116)	at com.tc.object.tx.TransactionSequencer.addTransaction(TransactionSequencer.java:95)	at com.tc.object.tx.RemoteTransactionManagerImpl.commit(RemoteTransactionManagerImpl.java:230)	at com.tc.object.tx.ClientTransactionManagerImpl.commitInternal(ClientTransactionManagerImpl.java:456)