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https://issues.apache.org/jira/browse/YARN-3025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14283559#comment-14283559
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Tsuyoshi OZAWA commented on YARN-3025:
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+1 for persisting blacklisted nodes at RM side. I think the frequency of
updating is not so high, so we can persist them in ZK safely.
> 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
>
> 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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