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https://issues.apache.org/jira/browse/AURORA-548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bill Farner reassigned AURORA-548:
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Assignee: Bill Farner
> scheduler should always show tasks_lost_rack_XXX metrics
> --------------------------------------------------------
>
> Key: AURORA-548
> URL: https://issues.apache.org/jira/browse/AURORA-548
> Project: Aurora
> Issue Type: Task
> Components: Scheduler
> Reporter: David Robinson
> Assignee: Bill Farner
>
> The scheduler's /vars endpoint only exposes a tasks_lost_rack_XXX metric when
> tasks in a rack have been lost (a tasks_lost_rack_XXX key has a non-zero
> value). If no tasks in a rack have been lost then metrics for the rack are
> not exposed. This makes the metrics difficult to use for alerting purposes --
> it's impossible to tell whether the rack does not exist or exists but has
> had no lost tasks. Each rack should have an entry in /vars regardless of
> whether there have been any lost tasks.
> Sample metrics:
> tasks_lost_rack_aab 3
> tasks_lost_rack_aae 4
> tasks_lost_rack_aah 2
> tasks_lost_rack_aai 3
> Expected metrics:
> tasks_lost_rack_aaa 0
> tasks_lost_rack_aab 3
> tasks_lost_rack_aac 0
> tasks_lost_rack_aad 0
> tasks_lost_rack_aae 4
> tasks_lost_rack_aaf 0
> tasks_lost_rack_aag 0
> tasks_lost_rack_aah 2
> tasks_lost_rack_aai 3
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