new PrivilegedExceptionAction<QJournalProtocol>() {
@Override
public QJournalProtocol run() throws IOException {
RPC.setProtocolEngine(confCopy,
QJournalProtocolPB.class, ProtobufRpcEngine.class);
QJournalProtocolPB pbproxy = RPC.getProxy(
QJournalProtocolPB.class,
RPC.getProtocolVersion(QJournalProtocolPB.class),
addr, confCopy);
return new QJournalProtocolTranslatorPB(pbproxy);
}