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https://issues.apache.org/jira/browse/YARN-3173?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14316372#comment-14316372
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Allen Wittenauer commented on YARN-3173:
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This actually can be fixed if start-yarn uses some of the same tricks that 
start-dfs uses.  However, it's a lot easier with HADOOP-11565 committed.

> start-yarn.sh script  can't aware how many RMs to be started.
> -------------------------------------------------------------
>
>                 Key: YARN-3173
>                 URL: https://issues.apache.org/jira/browse/YARN-3173
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: scripts
>    Affects Versions: 3.0.0
>            Reporter: BOB
>            Priority: Minor
>
> When config more than one RM, for example in the HA cluster, using the 
> start-yarn.sh script to start yarn cluster,but the cluster only start up with 
> one resourcemanager  on the node which start-yarn.sh be executed. I think 
> yarn should sense how many RMs been configured at the beginning, and start 
> them all in start-yarn.sh script. 



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