Stefan Egli updated SLING-5965:
    Assignee:     (was: Stefan Egli)

> Metrics and a Health-Check for Scheduler to detect long-running Quartz-Jobs
> ---------------------------------------------------------------------------
>                 Key: SLING-5965
>                 URL: https://issues.apache.org/jira/browse/SLING-5965
>             Project: Sling
>          Issue Type: New Feature
>          Components: Commons
>    Affects Versions: Commons Scheduler 2.5.0
>            Reporter: Stefan Egli
>             Fix For: Commons Scheduler 2.5.4
>         Attachments: SLING-5965.patch, SLING-5965.v2.patch.txt
> Sling Scheduler jobs (aka Quartz-Jobs) should typically be fast running jobs. 
> They are served from a thread-pool and should occupy that thread only for a 
> short amount of time.
> If there are 'misbehaving' quartz-jobs that run for a very long time, they 
> start to occupy threads from that thread-pool, thus have an influence on the 
> performance of other scheduled/quartz-jobs.
> We should have metrics (using 
> [sling.commons.metrics|https://sling.apache.org/documentation/bundles/metrics.html])
>  that provide information about internas of Sling Scheduler, such as average, 
> max etc duration of scheduled jobs, as well as how many jobs are currently 
> running and since when was the oldest job running.
> Based on this, a Health-Check can monitor the 'oldest job running' metric and 
> flag {{critical}} when eg the oldest job is older than {{60'000ms}} 
> (configurable, default).

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