[jira] [Updated] (SLIDER-82) Support ANTI_AFFINITY_REQUIRED option

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

     [ https://issues.apache.org/jira/browse/SLIDER-82?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Loughran updated SLIDER-82:
---------------------------------

    Issue Type: Improvement  (was: Sub-task)
        Parent:     (was: SLIDER-69)

> Support ANTI_AFFINITY_REQUIRED option
> -------------------------------------
>
>                 Key: SLIDER-82
>                 URL: https://issues.apache.org/jira/browse/SLIDER-82
>             Project: Slider
>          Issue Type: Improvement
>          Components: appmaster
>            Reporter: Steve Loughran
>
> slider has an anti-affinity flag in roles (visible in resources.json?), which is ignored.
> YARN-1042 promises this for YARN, slider will need
> # flag in resources.json
> # use in container requests
> we may also want two policies: anti-affinity-desired, and -required. Then if required nodes get >1 container for the same component type on the same node, it'd have to request a new one and return the old one (Risk: getting the same one back). 



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