// /////////////////////////////////////////////////////////////////
protected final LinkedHashMap<TransactionId, List<Operation>> inflightTransactions = new LinkedHashMap<TransactionId, List<Operation>>();
protected final LinkedHashMap<TransactionId, List<Operation>> preparedTransactions = new LinkedHashMap<TransactionId, List<Operation>>();
private List<Operation> getInflightTx(KahaTransactionInfo info, Location location) {
TransactionId key = key(info);
List<Operation> tx;
synchronized (inflightTransactions) {
tx = inflightTransactions.get(key);
if (tx == null) {
tx = Collections.synchronizedList(new ArrayList<Operation>());