_heartbeatScheduler.scheduleAtFixedRate(getHeartbeatTask(), _heartbeatInterval, _heartbeatInterval, TimeUnit.MILLISECONDS);
_notificationExecutor.submit(getNotificationTask());
} catch (Throwable e) {
s_logger.error("Unexpected exception : ", e);
txn.rollback();
throw new CloudRuntimeException("Unable to initialize cluster info into database");
}
if (s_logger.isInfoEnabled()) {