List<OLogSequenceNumber> operationList = new ArrayList<OLogSequenceNumber>();
operationUnits.put(((OAtomicUnitStartRecord) walRecord).getOperationUnitId(), operationList);
operationList.add(lsn);
} else if (walRecord instanceof OOperationUnitRecord) {
OOperationUnitRecord operationUnitRecord = (OOperationUnitRecord) walRecord;
OOperationUnitId unitId = operationUnitRecord.getOperationUnitId();
final List<OLogSequenceNumber> records = operationUnits.get(unitId);
assert records != null;