hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6682) Improve performance of AssignmentInformation datastructures
Date Thu, 08 Jun 2017 16:19:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-6682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16042953#comment-16042953
] 

Daryn Sharp commented on YARN-6682:
-----------------------------------

This is a simple/self-contained change.  Does anyone have time to review?

> Improve performance of AssignmentInformation datastructures
> -----------------------------------------------------------
>
>                 Key: YARN-6682
>                 URL: https://issues.apache.org/jira/browse/YARN-6682
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.8.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: YARN-6682.branch-2.8.patch, YARN-6682.branch-2.patch, YARN-6682.trunk.patch
>
>
> {{AssignmentInformation}} is inefficient and creates lots of garbage that increase gc
pressure.  It creates 3 hashmaps that each contain only 2 enum-based keys. This requires wrapper
node objects, boxing/unboxing of ints, and more expensive lookups than simply using primitive
arrays indexed by enum ordinal.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: yarn-issues-help@hadoop.apache.org


Mime
View raw message