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From "Sreekanth Ramakrishnan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5419) Provide a way for users to find out what operations they can do on which M/R queues
Date Thu, 16 Apr 2009 04:48:17 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12699519#action_12699519

Sreekanth Ramakrishnan commented on HADOOP-5419:

* Karam's comment about case where no user has access to any queue comment has not been handled.
If user cannot submit to any queues which are configured, the appropriate message should be
shown instead of blank line.
* Correct JavaDoc in {{JobSubmissionProtocol}} for {{getCurrentUserQueueAclsInfo()}}
* Error message in {{JobTracker.submitJob(JobID)}} can we change it to what Eric has commented?
* In {{QueueManager}} {{getCurrentUserQueueAclsInfo()}} can we {{operationsAllowed}} create
it and keep it instead of trying to create it lazily? would defintely improve readability
of the code.
 * Minor nit the indendation in the {{getCurrentUserQueueAclsInfo()}} seems to be incorrect.
* Why are we doing checking if user has access or not in {{getCurrentUserQueueAclsInfo()}}?
Cant we make the code in the method much simpler? As follows
for each queues:
	for each operation:
		allowed = hasAccess(queue, operation, ugi)
			add to operation allowed list
	create queue acls info object based on operations allowed list.

> Provide a way for users to find out what operations they can do on which M/R queues
> -----------------------------------------------------------------------------------
>                 Key: HADOOP-5419
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5419
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Hemanth Yamijala
>            Assignee: rahul k singh
>         Attachments: commands_manual.pdf, hadoop-5419-1.patch, hadoop-5419.patch, hadoop-5419.patch,
hadoop-5419.patch, hadoop-5419.patch
> This issue is to provide an improvement on the existing M/R framework to let users know
which queues they have access to, and for what operations. One use case for this would that
currently there is no easy way to know if the user has access to submit jobs to a queue, until
it fails with an access control exception.

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