hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Anubhav Dhoot (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-3920) FairScheduler Reserving a node for a container should be configurable to allow it used only for large containers
Date Mon, 20 Jul 2015 23:21:05 GMT

     [ https://issues.apache.org/jira/browse/YARN-3920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anubhav Dhoot updated YARN-3920:
--------------------------------
    Attachment: yARN-3920.001.patch

Patch implements a threshold based on a ratio to the maximum sized container. Test demonstrates
reservations are only done for requests larger than the threshold

> FairScheduler Reserving a node for a container should be configurable to allow it used
only for large containers
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-3920
>                 URL: https://issues.apache.org/jira/browse/YARN-3920
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: fairscheduler
>            Reporter: Anubhav Dhoot
>            Assignee: Anubhav Dhoot
>         Attachments: yARN-3920.001.patch
>
>
> Reserving a node for a container was designed for preventing large containers from starvation
from small requests that keep getting into a node. Today we let this be used even for a small
container request. This has a huge impact on scheduling since we block other scheduling requests
until that reservation is fulfilled. We should make this configurable so its impact can be
minimized by limiting it for large container requests as originally intended. 



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

Mime
View raw message