[AMBARI-18851] Collector host refresh in Ambari Server is not working in single Metrics collector deployments.

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.5.0
• Component/s: ambari-metrics
• Assignee: Aravindan Vijayan
• Reporter: Aravindan Vijayan
• Created: 10/Nov/16 20:44
• Updated: 15/Nov/16 20:13
• Resolved: 14/Nov/16 22:49

Description

Collector host refresh in Ambari Server is not working in single Metrics collector deployments.

STR
1. Deploy Ambari with 1 Metrics collector instance.
2. Stop Metrics Collector.
3. Start Metrics collector after a few minutes.
4. Metrics are not displayed on Ambari, though they show up on Grafana.

BUG
AmbariServer Metrics Collector HA State component does not refresh collector host if current collector host is null.