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From "Qin Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-20726) Aggregate alert does not show status properly at Maintenance Mode change
Date Thu, 13 Apr 2017 06:44:41 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-20726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Qin Liu updated AMBARI-20726:
-----------------------------
    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".

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".
Scenario 2:
1) Stopped one RegionServer - Red alert seen as expected
Percent RegionServers Available - CRIT affected: [1], total: [1] 
2) Now Turned On Maintenance Mode - For RegionServer status, Red alert gone as expected
But Percent RegionServers Available alert showing "CRIT"



  was:
Aggregate alert does not show status properly after Maintenance Mode change.

Steps to reproduce:
install a cluster that has HBase with 1 regionserver installed

Scenario 1
1. Turn On Maintenance Mode on one RegionServer or on the RegionServer host or on HBase service
2. Stop the RegionServer after that
3. No red alerts came as expected.
Percent RegionServers Available - OK affected: [0], total: [1]
4. Now Turned Off Maintenance Mode, still kept the Region Server down.
But Percent RegionServers Available alert still showing "OK"

Scenario 2:
1) Stopped one RegionServer - Red alert seen as expected
Percent RegionServers Available - CRIT affected: [1], total: [1] 
2) Now Turned On Maintenance Mode - For RegionServer status, Red alert gone as expected
But Percent RegionServers Available alert showing "CRIT"




> Aggregate alert does not show status properly at Maintenance Mode change
> ------------------------------------------------------------------------
>
>                 Key: AMBARI-20726
>                 URL: https://issues.apache.org/jira/browse/AMBARI-20726
>             Project: Ambari
>          Issue Type: Bug
>          Components: alerts
>    Affects Versions: 2.4.2
>            Reporter: Qin Liu
>            Assignee: Qin Liu
>            Priority: Minor
>             Fix For: trunk
>
>         Attachments: AMBARI-20726.patch
>
>
> 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".
> 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".
> Scenario 2:
> 1) Stopped one RegionServer - Red alert seen as expected
> Percent RegionServers Available - CRIT affected: [1], total: [1] 
> 2) Now Turned On Maintenance Mode - For RegionServer status, Red alert gone as expected
> But Percent RegionServers Available alert showing "CRIT"



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