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https://issues.apache.org/jira/browse/MAPREDUCE-6467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14903560#comment-14903560
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jeremie simon commented on MAPREDUCE-6467:
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I think updating to a more recent version of the common CLI is a good idea but 
will require more work as it might affect other classes and introduce some 
regressions. 

I think for the purpose of fixing this bug, it is probably easier to start 
removing the calls to OptionBuilder. 



> Submitting streaming job is not thread safe
> -------------------------------------------
>
>                 Key: MAPREDUCE-6467
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6467
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: job submission
>    Affects Versions: 2.7.1
>            Reporter: jeremie simon
>            Priority: Minor
>              Labels: easyfix, streaming, thread-safety
>
> The submission of the streaming job is not thread safe. 
> That is because the class StreamJob is using the OptionBuilder which is 
> itself not thread safe. 
> This can cause super tricky bugs. 
> An easy fix would be to simply create instances of Option through the normal 
> constructor and decorate the object if necessary. 
> This fix should be applied on the functions createOption and 
> createBoolOption. 



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