/**
* Sending null client id as don't want to trigger lease on server side.
* This also means that client connection validator will NOT impact client
* lease, so can not depend on it to maintain client lease with the server.
*/
Object o = innerClientInvoker.invoke(new InvocationRequest(null, Subsystem.SELF,
"$PING$", null, null, null));
pingWorked = true;
}
catch (Throwable throwable)
{