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From "Wei-Chiu Chuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12947) Update documentation Hadoop Groups Mapping to add static group mapping, negative cache
Date Thu, 24 Mar 2016 14:55:25 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15210340#comment-15210340
] 

Wei-Chiu Chuang commented on HADOOP-12947:
------------------------------------------

Thanks a lot for the quick reviewing and committing!

> Update documentation Hadoop Groups Mapping to add static group mapping, negative cache
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-12947
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12947
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation, security
>    Affects Versions: 2.7.2
>            Reporter: Wei-Chiu Chuang
>            Assignee: Wei-Chiu Chuang
>            Priority: Minor
>             Fix For: 2.8.0
>
>         Attachments: HADOOP-12947.001.patch
>
>
> After _Hadoop Group Mapping_ was written, I subsequently found a number of other things
that should be added/updated: 
> # static group mapping, statically map users to group names (HADOOP-10142)
> # negative cache, to avoid spamming NameNode with invalid user names (HADOOP-10755)
> # update query pattern for LDAP groups mapping if posix semantics is supported. (HADOOP-9477)



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