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From "Rohith (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3025) Provide API for retrieving blacklisted nodes
Date Fri, 13 Feb 2015 05:04:12 GMT

    [ https://issues.apache.org/jira/browse/YARN-3025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14319586#comment-14319586
] 

Rohith commented on YARN-3025:
------------------------------

Thanks [~yuzhihong@gmail.com] for workinig on this jira. I have quick commet on the patch
The api is introduced is at AMRMClient which used by ApplicationMaster to connect RM. But
this does not retrieve blacklisted nodes from RM which was already updated on ApplicationMaster
failover.  From previous discussions, I believe API is required for retrieving blacklistedNodes
from RM. 
Am I missing anything?


> Provide API for retrieving blacklisted nodes
> --------------------------------------------
>
>                 Key: YARN-3025
>                 URL: https://issues.apache.org/jira/browse/YARN-3025
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>         Attachments: yarn-3025-v1.txt
>
>
> We have the following method which updates blacklist:
> {code}
>   public synchronized void updateBlacklist(List<String> blacklistAdditions,
>       List<String> blacklistRemovals) {
> {code}
> Upon AM failover, there should be an API which returns the blacklisted nodes so that
the new AM can make consistent decisions.
> The new API can be:
> {code}
>   public synchronized List<String> getBlacklistedNodes()
> {code}



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