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https://issues.apache.org/jira/browse/HADOOP-8121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228502#comment-13228502
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Jonathan Natkins commented on HADOOP-8121:
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a) I'm a little unclear under what circumstances you expect this to hit a 
search limit. Would you expect that users would belong to more groups than the 
search limit can support in a single search? That seems surprising to me. Like 
I said earlier, if the plug-in is misconfigured, and you have a search filter 
that is not sensible, say (objectClass=*), yes, you would probably hit a search 
limit. In that case, an exception would be through in getGroups, and logged, 
alerting an admin to the fact that there's a problem.

b) You're right, I'll document this somewhere.

Regarding documentation, where is the most appropriate place for it to go?
                
> Active Directory Group Mapping Service
> --------------------------------------
>
>                 Key: HADOOP-8121
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8121
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: security
>            Reporter: Jonathan Natkins
>            Assignee: Jonathan Natkins
>         Attachments: HADOOP-8121.patch, HADOOP-8121.patch, HADOOP-8121.patch, 
> HADOOP-8121.patch, HADOOP-8121.patch, HADOOP-8121.patch, HADOOP-8121.patch, 
> HADOOP-8121.patch, HADOOP-8121.patch
>
>
> Planning on building a group mapping service that will go and talk directly 
> to an Active Directory setup to get group memberships

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