@Override
public Set<InDoubtTxInfo> getInDoubtTransactionInfoFromCluster() {
Map<Xid, InDoubtTxInfoImpl> result = new HashMap<Xid, InDoubtTxInfoImpl>();
if (rpcManager != null) {
GetInDoubtTxInfoCommand inDoubtTxInfoCommand = commandFactory.buildGetInDoubtTxInfoCommand();
Map<Address, Response> addressResponseMap = rpcManager.invokeRemotely(null, inDoubtTxInfoCommand,
rpcManager.getDefaultRpcOptions(true));
for (Map.Entry<Address, Response> re : addressResponseMap.entrySet()) {
Response r = re.getValue();
if (!isSuccessful(r)) {