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https://issues.apache.org/jira/browse/HADOOP-2683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12568712#action_12568712
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Raghu Angadi commented on HADOOP-2683:
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bq. I'd prefer if we could get rid of Server.getUserInfo().
Current code and the proposed patch need to call Server.getUserInfo() even if
there is no RPC and therefore no Server.
+0.5 :). It is required to call this only if caller expects to be in an RPC.
But getting rid of it sounds just as good.
bq. I think we should not automatically assume super privileges currentUGI is
null.
+1.
> Provide a way to specifiy login out side an RPC
> -----------------------------------------------
>
> Key: HADOOP-2683
> URL: https://issues.apache.org/jira/browse/HADOOP-2683
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.16.0
> Reporter: Raghu Angadi
> Assignee: Tsz Wo (Nicholas), SZE
> Priority: Blocker
> Fix For: 0.16.1
>
> Attachments: 2683_20080211.patch, 2683_20080211b.patch,
> 2683_20080212.patch
>
>
> Requirements AFIK :
> It is required in some special cases (benchmarks etc) to invoke NameNode
> functionality without an RPC. For this users should be able to set user
> information that is otherwise available only an RPC.
> Patch for HADOOP-1298 includes a change to Server.java so that
> {{Server.getUserInfo()}} does not need to in an RPC. This probably will be
> replaced by patch here.
> Please include any other Jira's that depend on this.
> Proposed fix:
> - UserGroupInformation becomes an abstract class
> - public static UserGroupInformation.getUserInfo() is added. which usually
> just returns Server.getUserInfo();
> - public static UserGroupInformation.setUserInfo(UserGroupInformation) sets
> a thread local that will returned if Server.getUserInfo() returns null.
> - all invocations of Server.getUserInfo() will be replaced by
> UserGroupInformation.getUserInfo().
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