@Override
    protected SimpleServerRpcConnection getConnection(SocketChannel channel, long time) {
      return new FailingConnection(this, channel, time);
    }
Tests that the RpcServer creates & dispatches CallRunner object to scheduler with non-null
remoteAddress set to its Call Object
hbase-server/src/test/java/org/apache/hadoop/hbase/ipc/AbstractTestIPC.java