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https://issues.apache.org/jira/browse/HADOOP-7147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13045630#comment-13045630
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Allen Wittenauer commented on HADOOP-7147:
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Actually, we probably want to ignore the call anyway.  Looks like setnetgrent 
suffers from some really bizarro portability issues. On Linux, setnetgrent 
returns 1 on success.  On Solaris, it returns 0.  

There is a side issue as well, at least on Solaris, where setnetgrent() will 
actually reset for *all* threads that are in the midst of enumerating 
netgroups.  I haven't verified if this is true on Linux or other platforms.

> Native code does not build on BSD/OSX
> -------------------------------------
>
>                 Key: HADOOP-7147
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7147
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 0.23.0
>            Reporter: Todd Lipcon
>
> HADOOP-6864 uses the setnetgrent function in a way which is not compatible 
> with BSD APIs, where the call returns void rather than int. This prevents the 
> native libs from building on OSX, for example.

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