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From "Bill Farner (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AURORA-653) Make Job.instances value available through the IDL
Date Thu, 14 Aug 2014 23:29:19 GMT

    [ https://issues.apache.org/jira/browse/AURORA-653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14097903#comment-14097903
] 

Bill Farner commented on AURORA-653:
------------------------------------

Feel free to push back on this opinion, but i think you should fully trust Aurora to try to
run the user-requested number of instances (i.e. closing this ticket), or not trust it at
all (taking the approach i mentioned above, which is more legwork, but more thorough).

> Make Job.instances value available through the IDL
> --------------------------------------------------
>
>                 Key: AURORA-653
>                 URL: https://issues.apache.org/jira/browse/AURORA-653
>             Project: Aurora
>          Issue Type: Story
>          Components: Scheduler
>            Reporter: Erik van Roode
>
> Why:
>   I would like to be able to determine the health of an app, as in the ratio of how many
instances are running
> and how many instances were configured to run (Job.instances).
>   I can find the "Active" number in various places, but I cannot find the "Configured"
anywhere.
> As far as I can tell every instance of "Instances/instanceCount" is actually the number
of active jobs/tasks.
>    Eg, JobConfiguration contains instanceCount, but it is not Job.instances. I created
a job with 5 instances,
> killed one, and instanceCount dropped to 4.



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