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From "Swapan Shridhar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-19035) LLAP startup: Ambari should not use slider anti-affinity when it's avoidable
Date Thu, 01 Dec 2016 00:05:58 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-19035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Swapan Shridhar updated AMBARI-19035:
-------------------------------------
    Status: Patch Available  (was: In Progress)

> LLAP startup: Ambari should not use slider anti-affinity when it's avoidable
> ----------------------------------------------------------------------------
>
>                 Key: AMBARI-19035
>                 URL: https://issues.apache.org/jira/browse/AMBARI-19035
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.4.1
>            Reporter: Swapan Shridhar
>            Assignee: Swapan Shridhar
>            Priority: Critical
>             Fix For: 2.5.0
>
>         Attachments: AMBARI-19035.patch
>
>
> - YARN does not support anti-affinity, and therefore Slider implements AA by the means
of exclusion lists - it starts containers one by one and excludes the nodes it gets; that
adds ~2sec./machine of overhead (on openstack).
> - When the LLAP container memory size configuration is more than half of YARN node memory,
or the same for number of cores, AA is implicit and should be avoided.



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