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https://issues.apache.org/jira/browse/YARN-1237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14314507#comment-14314507
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Tsuyoshi OZAWA commented on YARN-1237:
--------------------------------------

Hi [~brahmareddy] , thank you for taking this JIRA.

{quote}
"comma separated list of services where service name should only contain 
a-zA-Z0-9_ and can not start with numbers"
{quote}

Sounds reasonable. From my actual configuration:
{code}
<property>
  <name>yarn.nodemanager.aux-services</name>
  <value>spark_shuffle,mapreduce_shuffle</value>
</property>
{code}

> Description for yarn.nodemanager.aux-services in yarn-default.xml is 
> misleading
> -------------------------------------------------------------------------------
>
>                 Key: YARN-1237
>                 URL: https://issues.apache.org/jira/browse/YARN-1237
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Hitesh Shah
>            Priority: Minor
>
> Description states:
> "the valid service name should only contain a-zA-Z0-9_ and can not start with 
> numbers" 
> It seems to indicate only one service is supported. If multiple services are 
> allowed, it does not indicate how they should be specified i.e. 
> comma-separated or space-separated? If the service name cannot contain 
> spaces, does this imply that space-separated lists are also permitted?
>  



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