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From "Mehrdad Nurolahzade (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AURORA-1829) Expose stats on preemptor BiCache expirations
Date Sat, 24 Dec 2016 00:59:58 GMT

     [ https://issues.apache.org/jira/browse/AURORA-1829?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mehrdad Nurolahzade updated AURORA-1829:
----------------------------------------
    Description: 
We have no visibility into whether reservations made by preemption are actually consumed or
simply expire.

We are currently collecting stats for the size of preemption/reservation {{BiCache}}. We could
additionally collect (a) cache expiration stats and (b) reservation entry removals in {{TaskSchedulerImpl.taskChanged()}}
to monitor overall preemption effectiveness. 

  was:
We have no visibility into whether reservations made by preemption are actually consumed or
simply expire.

We are currently collecting stats for the size of preemptor {{BiCache}} ({{reservation_cache_size}}).
We could additionally collect (a) cache expiration stats and (b) reservation entry removals
in {{TaskSchedulerImpl.taskChanged()}} to monitor overall preemption effectiveness. 


> Expose stats on preemptor BiCache expirations
> ---------------------------------------------
>
>                 Key: AURORA-1829
>                 URL: https://issues.apache.org/jira/browse/AURORA-1829
>             Project: Aurora
>          Issue Type: Task
>          Components: Scheduler
>            Reporter: Mehrdad Nurolahzade
>            Assignee: Mehrdad Nurolahzade
>            Priority: Minor
>              Labels: newbie
>
> We have no visibility into whether reservations made by preemption are actually consumed
or simply expire.
> We are currently collecting stats for the size of preemption/reservation {{BiCache}}.
We could additionally collect (a) cache expiration stats and (b) reservation entry removals
in {{TaskSchedulerImpl.taskChanged()}} to monitor overall preemption effectiveness. 



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