[jira] [Commented] (UIMA-4742) DUCC RM: Never deallocate non-preemptable shares

["Jim Challenger (JIRA)" <de...@uima.apache.org>]

    [ https://issues.apache.org/jira/browse/UIMA-4742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15109022#comment-15109022 ] 

Jim Challenger commented on UIMA-4742:
--------------------------------------

Update to the policy:
    For vary-off: leave all work in place EXCEPT for fair-share jobs, whose processes will be purged.
    For node death: purge all work EXCEPT reservations

Note 5 classes of work to consider.
    1. reservation, 2. arbitrary process, 3. fair-share job, 4. service instance, 5.  Job submitted to a non-preemptable class.

> DUCC RM: Never deallocate non-preemptable shares 
> -------------------------------------------------
>
>                 Key: UIMA-4742
>                 URL: https://issues.apache.org/jira/browse/UIMA-4742
>             Project: UIMA
>          Issue Type: Task
>          Components: DUCC
>    Affects Versions: 2.0.1-Ducc
>            Reporter: Jim Challenger
>            Assignee: Jim Challenger
>             Fix For: 2.1.0-Ducc
>
>
> Design change - never deallocate non-preemptable shares until the job is completed in some way.  The shares stay allocated under all these conditions, some of which may require manual attention to clear the job:
> - vary off
> - node failure
> - misconfiguration
> Previously, jobs in class FIXED, services, and APs would be purged because they can be started elsewhere.



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