[AMBARI-20726] Aggregate alert does not show status properly at Maintenance Mode change

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.2
• Fix Version/s: trunk
• Component/s: alerts
• Epic Link: Alerts Redesign
• Assignee: Qin Liu
• Reporter: Qin Liu
• Created: 10/Apr/17 16:35
• Updated: 08/Nov/17 14:27
• Resolved: 10/May/17 21:05

Description

Aggregate alert does not show status properly at Maintenance Mode change.

Steps to reproduce:
Install a cluster that has HBase with one regionserver installed.

Scenario 1:
1. Turn On Maintenance Mode on the RegionServer or on the RegionServer host or on the HBase service.
2. Stop the RegionServer after that.
3. No red alerts will show as expected.
Percent RegionServers Available - OK affected: [0], total: [1]
4. Now Turn Off Maintenance Mode, still keep the RegionServer down.
But Percent RegionServers Available alert will still show "OK" - "CRIT" is expected.

Scenario 2:
1) Stop the RegionServer - Red alert will show as expected.
Percent RegionServers Available - CRIT affected: [1], total: [1]
2) Now Turn On Maintenance Mode - For RegionServer status, Red alert will be gone as expected.
But Percent RegionServers Available alert will still show "CRIT" - "OK" is expected.

Issue Links

• links to: ReviewBoard