public Pong call() {
            try {
                return ping(new Ping(monitor.getConfiguration().getRequestTimeout()), connection);
            } catch (RuntimeException e) {
                return new Pong(ErrorMessage.createBackendCommunicationError("Exception when pinging "
                                                                             + connection + ": "
                                                                             + Exceptions.toMessageString(e)));
            }
        }
Returns true if this query has timed out now
container-search/src/main/java/com/yahoo/search/cluster/ClusterSearcher.java