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