[jira] [Commented] (SLIDER-823) Über-JIRA : placement phase 3

["Steve Loughran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SLIDER-823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14386524#comment-14386524 ] 

Steve Loughran commented on SLIDER-823:
---------------------------------------

With the SLIDER-799 placement management code, we should be able to implement anti-affinity ourselves

# get a topology map (at least list of nodes) from YARN
# pick some at random
# ask for them
# Escalate by not just relaxing placement, but by asking for other nodes in remaining in the set of not-yet-requested locations.
# fallback to relaxed.

This would give parallel placement requests (=fast launch on a quiet cluster) and a strategy for dealing with failure to place

> Über-JIRA : placement phase 3
> -----------------------------
>
>                 Key: SLIDER-823
>                 URL: https://issues.apache.org/jira/browse/SLIDER-823
>             Project: Slider
>          Issue Type: New Feature
>          Components: appmaster
>    Affects Versions: Slider 0.80
>            Reporter: Steve Loughran
>             Fix For: Slider 1.0.0
>
>
> Phase 3 of placement enhancements



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