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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6944) [Herriot] Implement a functionality for building proxy users file and proxy users list.
Date Sat, 18 Sep 2010 00:53:33 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6944?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910879#action_12910879

Konstantin Boudnik commented on HADOOP-6944:

Ok, looks more sensible now. One question: if a gridmix in question has the access to Herriot
APIs (such as proposed one) then why the functionality in the patch can't be implemented by
the test?  Please correct me if I'm wrong and gridmix tests don't have an access to Herriot
APIs aleady.

It seems to me that you want to create new functionality that is required by just certain
types of tests only, which doesn't look right to me.

Besides, writing a content to a file looks potentially thread unsafe. 

> [Herriot] Implement a functionality for building proxy users file and proxy users list.
> ---------------------------------------------------------------------------------------
>                 Key: HADOOP-6944
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6944
>             Project: Hadoop Common
>          Issue Type: Task
>          Components: test
>            Reporter: Vinay Kumar Thota
>            Assignee: Vinay Kumar Thota
>         Attachments: HADOOP-6944.patch, HADOOP-6944.patch
> Gridmix should require a proxy user's file for impersonating various jobs. So, implement
couple of methods for getting the proxy users list and a proxy users file (it's a combination
of proxy users and groups) based on cluster configuration.
> The proxy users list should require for map reduce jobs and proxy users file should require
for gridmix jobs.
> The following are methods signature,
> public String getProxyUsersFile() - getting the proxy users file based on cluster configuration
> public String buildProxyUsersFile() - Build the proxy users file using the cluster configuration.
> public ArraryList<String> getHadoopMultiUsersList() - get the list of proxy users
list based on cluster configuration.

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