hadoop-yarn-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sandy Ryza (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-417) Add a poller that allows the AM to receive notifications when it is assigned containers
Date Tue, 19 Mar 2013 23:13:16 GMT

    [ https://issues.apache.org/jira/browse/YARN-417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13607000#comment-13607000
] 

Sandy Ryza commented on YARN-417:
---------------------------------

That's a good point.  I'm worried about taking it in this direction, though, for reasons of
future compatibility.  If we decide to later include additional information with an AMResponse,
staying consistent with this approach would require us to add additional methods to the callback
handler, which would break API compatibility.  I don't have a clear answer on the best way
to deal with this.  One option would be to make the callback handler an abstract class and
not force users to implement methods like getClusterAvailableResources.  Another would be
to have a callback that returns the entire AMResponse.
                
> Add a poller that allows the AM to receive notifications when it is assigned containers
> ---------------------------------------------------------------------------------------
>
>                 Key: YARN-417
>                 URL: https://issues.apache.org/jira/browse/YARN-417
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: api, applications
>    Affects Versions: 2.0.3-alpha
>            Reporter: Sandy Ryza
>            Assignee: Sandy Ryza
>         Attachments: AMRMClientAsync-1.java, AMRMClientAsync.java, YARN-417-1.patch,
YARN-417-2.patch, YARN-417-3.patch, YARN-417-4.patch, YARN-417-4.patch, YARN-417.patch, YarnAppMaster.java,
YarnAppMasterListener.java
>
>
> Writing AMs would be easier for some if they did not have to handle heartbeating to the
RM on their own.

--
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