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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4719) Add a helper library to maintain node state and allows common queries
Date Tue, 08 Mar 2016 15:09:40 GMT

    [ https://issues.apache.org/jira/browse/YARN-4719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15185037#comment-15185037
] 

Hadoop QA commented on YARN-4719:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 0s {color} | {color:blue}
Docker mode activated. {color} |
| {color:red}-1{color} | {color:red} patch {color} | {color:red} 0m 7s {color} | {color:red}
YARN-4719 does not apply to trunk. Rebase required? Wrong Branch? See https://wiki.apache.org/hadoop/HowToContribute
for help. {color} |
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|| Subsystem || Report/Notes ||
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12792015/yarn-4719-4.patch
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| JIRA Issue | YARN-4719 |
| Console output | https://builds.apache.org/job/PreCommit-YARN-Build/10721/console |
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> 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, yarn-4719-4.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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