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https://issues.apache.org/jira/browse/FLINK-8247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16617700#comment-16617700
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ASF GitHub Bot commented on FLINK-8247:
---------------------------------------

jaredstehler commented on issue #6689: [FLINK-8247] [Mesos] Support case where 
hadoop is not on classpath
URL: https://github.com/apache/flink/pull/6689#issuecomment-422062032
 
 
   @EronWright  Yeah, I was going for the least invasive change. With regard to 
the classloading issue: I was surprised as well; I think we don't trip on the 
missing class until it's initially used in the static context: 
`UserGroupInformation.getCurrentUser();`. 

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> Support Hadoop-free variant of Flink on Mesos
> ---------------------------------------------
>
>                 Key: FLINK-8247
>                 URL: https://issues.apache.org/jira/browse/FLINK-8247
>             Project: Flink
>          Issue Type: Bug
>          Components: Mesos
>    Affects Versions: 1.4.0
>            Reporter: Eron Wright 
>            Assignee: Eron Wright 
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.4.3, 1.5.5
>
>
> In Hadoop-free mode, Hadoop isn't on the classpath.  The Mesos job manager 
> normally uses the Hadoop UserGroupInformation class to overlay a user context 
> (`HADOOP_USER_NAME`) for the task managers.  
> Detect the absence of Hadoop and skip over the `HadoopUserOverlay`, similar 
> to the logic in `HadoopModuleFactory`.    This may require the introduction 
> of an overlay factory.



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