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https://issues.apache.org/jira/browse/MAPREDUCE-5265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13708763#comment-13708763
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Jason Lowe commented on MAPREDUCE-5265:
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bq. I found that I was not able to use HDFS classes in History server since the
former is not added as a dependency to the latter,which makes sense. Ideally we
would want move these protocol classes to common and then derive it in HDFS and
History server.
Agreed, rather than have hadoop-mapreduce-client-hs depend upon the HDFS
project just for this, let's move the HDFS protocols to common so they are more
readily reusable. I'll file a separate JIRA.
If we are going to duplicate this code in the short-term, we need to mark them
package private or otherwise annotate them so it's clear these should not be
used outside of the hs package (because they'd be going away soon).
> Need an admin interface on history server with the ability to refresh super
> user groups,refresh user to group mappings,refresh admin acls,get groups
> given a username.
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5265
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5265
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: jobhistoryserver
> Affects Versions: 2.1.0-beta
> Reporter: Jason Lowe
> Assignee: Ashwin Shankar
> Attachments: JHS_REFRESH-10.txt, JHS_REFRESH-2.txt,
> JHS_REFRESH-4.txt, JHS_REFRESH-6.txt, JHS_REFRESH-8.txt, JHS_REFRESH-9.txt
>
>
> The history server needs an admin interface with the ability to
> 1. refresh the super user groups configurations,
> 2. refresh user to group mappings,
> 3. refresh its admin acls,
> 4. get groups given a username
> without requiring a restart of the history server. This is analogous to the
> -refreshSuperUserGroupsConfiguration capabilities provided by hdfs dfsadmin
> and yarn rmadmin.
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