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https://issues.apache.org/jira/browse/HADOOP-15950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16699656#comment-16699656
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Lukas Majercak commented on HADOOP-15950:
-----------------------------------------

The patch also includes a bunch of cleanup in the code (exceptions that are not 
thrown etc). I thought about making a separate JIRA for this, but then thought 
that would just create problems when moving these changes across branches.

> Failover for LdapGroupsMapping
> ------------------------------
>
>                 Key: HADOOP-15950
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15950
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: common, security
>            Reporter: Lukas Majercak
>            Assignee: Lukas Majercak
>            Priority: Major
>         Attachments: HADOOP-15950.001.patch, HADOOP-15950.002.patch, 
> HADOOP-15950.003.patch
>
>
> Currently, LdapGroupsMapping supports only a single ldap server url, this can 
> obviously cause issues if the ldap instance goes down. This JIRA attempts to 
> improve this by allowing users to list multiple ldap server urls, and 
> performing a failover if we detect any issues.



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