hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stefanlee (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (YARN-3933) FairScheduler: Multiple calls to completedContainer are not safe
Date Wed, 07 Feb 2018 09:00:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-3933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16355169#comment-16355169
] 

stefanlee edited comment on YARN-3933 at 2/7/18 8:59 AM:
---------------------------------------------------------

Because of *Needy* in *FairSharePolicy* , Whether a queue has negative  used resource
can lead to FairScheduler do not assign containers  to any other queues in many scheduler
rounds or not? [~yufeigu] [~djp] [~kasha]


was (Author: imstefanlee):
Because of **Needy** in **FairSharePolicy** , Whether a queue has negative  used resource
can lead to FairScheduler do not assign containers  to any other queues in many scheduler
rounds or not? [~yufeigu] [~djp] [~kasha]

> FairScheduler: Multiple calls to completedContainer are not safe
> ----------------------------------------------------------------
>
>                 Key: YARN-3933
>                 URL: https://issues.apache.org/jira/browse/YARN-3933
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: fairscheduler
>    Affects Versions: 2.7.1
>            Reporter: Lavkesh Lahngir
>            Assignee: Shiwei Guo
>            Priority: Major
>              Labels: oct16-medium
>             Fix For: 2.8.0, 3.0.0-alpha4
>
>         Attachments: YARN-3933.001.patch, YARN-3933.002.patch, YARN-3933.003.patch, YARN-3933.004.patch,
YARN-3933.005.patch, YARN-3933.006.patch, yarn-3933-branch-2.8.patch
>
>
> In our cluster we are seeing available memory and cores being negative. 
> Initial inspection:
> Scenario no. 1: 
> In capacity scheduler the method allocateContainersToNode() checks if 
> there are excess reservation of containers for an application, and they are no longer
needed then it calls queue.completedContainer() which causes resources being negative. And
they were never assigned in the first place. 
> I am still looking through the code. Can somebody suggest how to simulate excess containers
assignments ?



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
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