nameIdPair.revertToNull(); /* read transaction, so null id is ok. */
/* Now delete old nodes and the group, and establish a new group */
Txn txn = new MasterTxn(repImpl, txnConfig, nameIdPair);
RepGroupImpl prevRepGroup = fetchGroupObject(txn, dbImpl);
txn.commit();
final int nodeIdSequenceStart = prevRepGroup.getNodeIdSequence();
final DatabaseEntry keyEntry = new DatabaseEntry();
final DatabaseEntry value = new DatabaseEntry();