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From "Zhe (Joe) Wang (JIRA)" <>
Subject [jira] [Updated] (AMBARI-15603) Exposure of Global Alert Repeat Tolerance Value in Web Client
Date Tue, 05 Apr 2016 17:44:25 GMT


Zhe (Joe) Wang updated AMBARI-15603:
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Committed to trunk

> Exposure of Global Alert Repeat Tolerance Value in Web Client
> -------------------------------------------------------------
>                 Key: AMBARI-15603
>                 URL:
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-web
>    Affects Versions: 2.4.0
>            Reporter: Zhe (Joe) Wang
>            Assignee: Zhe (Joe) Wang
>             Fix For: 2.4.0
>         Attachments: AMBARI-15603.v0.patch, AMBARI-15603.v1.patch
> The global repeat tolerance value for all alert definitions is set on the cluster-env
configuration. Unless an alert definition overrides this value, it will be used for any definition
in the system. By default, this value will be set to 1, indicating that there is no tolerance
and the alert state should be taken at face value.
> {code}
> GET api/v1/clusters/<cluster>/configurations?type=cluster-env&tag=<tag>
>       "Config": {
>         "cluster_name": "c1",
>         "stack_id": "HDP-2.4"
>       },
>       "properties": {
>         "command_retry_enabled": "true",
>         "command_retry_max_time_in_sec": "600",
>         ...
>         "alerts_repeat_tolerance" : "1"
>        ...
>       }
> {code}
> The web client should expose a way to update the {{cluster-env}} to set this value. 
> *UI Warning of Delayed Alerts*
> When changing the value of the global of definition-specific repeat tolerance, a warning
should be presented to the user to indicate that it will now take longer for the alert notifications
to be sent. This is because notifications are delayed until the interval multiplied by the
repeat tolerance is reached. Consider the case where the check against an alert happens every
5 minutes and the repeat tolerance is set to 5. It will be at least 25 minutes before any
outbound notifications are dispatched. This warning can be on a per-alert definition basis
as well as when setting the global value.

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