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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5072) Support comma separated list of includes and excludes files
Date Mon, 16 May 2016 19:52:13 GMT

    [ https://issues.apache.org/jira/browse/YARN-5072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15285178#comment-15285178
] 

Allen Wittenauer commented on YARN-5072:
----------------------------------------

bq. should be able to point to a list of files each of which belongs to one HDFS cluster

Why?  Is there something wrong with making a single file with all of the hosts?

> Support comma separated list of includes and excludes files
> -----------------------------------------------------------
>
>                 Key: YARN-5072
>                 URL: https://issues.apache.org/jira/browse/YARN-5072
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>         Attachments: YARN-5072.patch
>
>
> When a yarn cluster shares the same hosts as the underlying HDFS cluster, we have {{yarn.resourcemanager.nodes.include-path}}
point to the same file or symlink of the {{dfs.hosts}} file used by HDFS to make admin easier.
> If we want to set up a yarn cluster to run on the same hosts of several HDFS clusters
combined, it means {{yarn.resourcemanager.nodes.include-path}} should be able to point to
a list of files each of which belongs to one HDFS cluster.
> Backward compatibility, it seems ok to continue to reuse {{yarn.resourcemanager.nodes.include-path}}
as long as it can still take a single file. 



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