AMBARI-19032 HDFS Metric alerts turns to UNKNOWN state with error "'NoneType' object has no attribute 'split'" (additional patch) (dsen)

ambari-server/src/main/resources/common-services/AMBARI_METRICS/0.1.0/package/scripts/params.py

@@ -117,7 +117,7 @@ if 'cluster-env' in config['configurations'] and \
     'metrics_collector_vip_host' in config['configurations']['cluster-env']:
   metric_collector_host = config['configurations']['cluster-env']['metrics_collector_vip_host']
 else:
-  metric_collector_host = select_metric_collector_hosts_from_hostnames(ams_collector_hosts)
+  metric_collector_host = select_metric_collector_hosts_from_hostnames(ams_collector_hosts.split(","))
 if 'cluster-env' in config['configurations'] and \
     'metrics_collector_vip_port' in config['configurations']['cluster-env']:
   metric_collector_port = config['configurations']['cluster-env']['metrics_collector_vip_port']