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Posted to common-issues@hadoop.apache.org by "Suresh Srinivas (JIRA)" <ji...@apache.org> on 2013/07/15 22:50:49 UTC

[jira] [Commented] (HADOOP-9734) Common RefreshUserMappingsProtocol and GetUserMappingsProtocol implementation

    [ https://issues.apache.org/jira/browse/HADOOP-9734?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13708960#comment-13708960 ] 

Suresh Srinivas commented on HADOOP-9734:
-----------------------------------------

+1 for this change. This should happen before 2.1.0-beta. Otherwise there might be incompatibilities (have not thought through this though).
                
> Common RefreshUserMappingsProtocol and GetUserMappingsProtocol implementation
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-9734
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9734
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: ipc
>    Affects Versions: 2.0.4-alpha
>            Reporter: Jason Lowe
>            Priority: Minor
>
> Many of the Hadoop server daemons support the concept of refreshing user mappings or getting the currently cached user-group mappings.  Currently there are protocol buffer definitions of RefreshUserMappingsProtocol and GetUserMappingsProtocol in HDFS, but using it requires packages to depend upon HDFS when they may otherwise have no reason to do so.  We should move the protocol buffer definitions and glue code to common for easier reuse.

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