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From "Mehrdad Nurolahzade (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AURORA-1829) Expose stats on preemptor BiCache expirations
Date Sat, 24 Dec 2016 17:21:58 GMT

    [ https://issues.apache.org/jira/browse/AURORA-1829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15775181#comment-15775181
] 

Mehrdad Nurolahzade commented on AURORA-1829:
---------------------------------------------

https://reviews.apache.org/r/55027/

> 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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