hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Bikas Saha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-308) Improve documentation about what "asks" means in AMRMProtocol
Date Fri, 04 Jan 2013 22:44:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13544319#comment-13544319
] 

Bikas Saha commented on YARN-308:
---------------------------------

Sorry for not being clear. ResourceRequests are host location dependent. Which means that
every time we change the requests for a given location (priority etc) then we dont send the
delta value. We send the absolute value of the request. Sorry for the confusion. Like Jason
clearly explains, pure delta is open to races and pure absolute has high communication cost.
                
> Improve documentation about what "asks" means in AMRMProtocol
> -------------------------------------------------------------
>
>                 Key: YARN-308
>                 URL: https://issues.apache.org/jira/browse/YARN-308
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: api, resourcemanager
>    Affects Versions: 2.0.2-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>             Fix For: 2.0.3-alpha
>
>         Attachments: YARN-308.patch
>
>
> It's unclear to me from reading the javadoc exactly what "asks" means when the AM sends
a heartbeat to the RM.  Is the AM supposed to send a list of all resources that it is waiting
for?  Or just inform the RM about new ones that it wants?

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message