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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2016/03/02 18:49:18 UTC

[jira] [Updated] (YARN-4719) Add a helper library to maintain node state and allows common queries

     [ https://issues.apache.org/jira/browse/YARN-4719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Karthik Kambatla updated YARN-4719:
-----------------------------------
    Attachment: yarn-4719-3.patch

> Add a helper library to maintain node state and allows common queries
> ---------------------------------------------------------------------
>
>                 Key: YARN-4719
>                 URL: https://issues.apache.org/jira/browse/YARN-4719
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>    Affects Versions: 2.8.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: yarn-4719-1.patch, yarn-4719-2.patch, yarn-4719-3.patch
>
>
> The scheduler could use a helper library to maintain node state and allowing matching/sorting queries. Several reasons for this:
> # Today, a lot of the node state management is done separately in each scheduler. Having a single library will take us that much closer to reducing duplication among schedulers.
> # Adding a filtering/matching API would simplify node labels and locality significantly. 
> # An API that returns a sorted list for a custom comparator would help YARN-1011 where we want to sort by allocation and utilization for continuous/asynchronous and opportunistic scheduling respectively. 



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