hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (YARN-3485) FairScheduler headroom calculation doesn't consider maxResources for Fifo and FairShare policies
Date Wed, 29 Apr 2015 04:11:06 GMT

     [ https://issues.apache.org/jira/browse/YARN-3485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthik Kambatla resolved YARN-3485.
------------------------------------
       Resolution: Fixed
    Fix Version/s: 2.7.1
     Hadoop Flags: Reviewed

Committed to trunk, branch-2 and branch-2.7 (after running TestFSAppAttempt for sanity).

Thanks Sandy, Anubhav and Arun for the reviews. 

> FairScheduler headroom calculation doesn't consider maxResources for Fifo and FairShare
policies
> ------------------------------------------------------------------------------------------------
>
>                 Key: YARN-3485
>                 URL: https://issues.apache.org/jira/browse/YARN-3485
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.7.0
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Critical
>             Fix For: 2.7.1
>
>         Attachments: yarn-3485-1.patch, yarn-3485-2.patch, yarn-3485-3.patch, yarn-3485-prelim.patch
>
>
> FairScheduler's headroom calculations consider the fairshare and cluster-available-resources,
and the fairshare has maxResources. However, for Fifo and Fairshare policies, the fairshare
is used only for memory and not cpu. So, the scheduler ends up showing a higher headroom than
is actually available. This could lead to applications waiting for resources far longer than
then intend to. e.g. MAPREDUCE-6302.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message