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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-15487) LLAP: Improvements to random selection while scheduling
Date Wed, 21 Dec 2016 22:48:58 GMT

     [ https://issues.apache.org/jira/browse/HIVE-15487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prasanth Jayachandran updated HIVE-15487:
-----------------------------------------
    Attachment: HIVE-15487.1.patch

[~gopalv] Can you please review this patch?


> LLAP: Improvements to random selection while scheduling
> -------------------------------------------------------
>
>                 Key: HIVE-15487
>                 URL: https://issues.apache.org/jira/browse/HIVE-15487
>             Project: Hive
>          Issue Type: Bug
>          Components: llap
>    Affects Versions: 2.2.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-15487.1.patch
>
>
> Currently llap scheduler, picks up random host when no locality information is specified
or when all requested hosts are busy serving other requests with forced locality. In such
cases, we can pick up the next available node in consistent order to get better locality instead
of random selection. 



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