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https://issues.apache.org/jira/browse/YARN-2892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14238000#comment-14238000
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Junping Du commented on YARN-2892:
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Wait... I looked at the patch again, looks like it will bring serious
incompatible issue: the applicationReport return to client include short name
now rather than full name before. We should be super carefully now as we are
supporting YARN rolling upgrade since 2.6. Any other ways?
> Unable to get AMRMToken in unmanaged AM when using a secure cluster
> -------------------------------------------------------------------
>
> Key: YARN-2892
> URL: https://issues.apache.org/jira/browse/YARN-2892
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager
> Reporter: Sevada Abraamyan
> Assignee: Sevada Abraamyan
> Attachments: YARN-2892.patch, YARN-2892.patch, YARN-2892.patch
>
>
> An AMRMToken is retrieved from the ApplicationReport by the YarnClient.
> When the RM creates the ApplicationReport and sends it back to the client it
> makes a simple security check whether it should include the AMRMToken in the
> report (See createAndGetApplicationReport in RMAppImpl).This security check
> verifies that the user who submitted the original application is the same
> user who is requesting the ApplicationReport. If they are indeed the same
> user then it includes the AMRMToken, otherwise it does not include it.
> The problem arises from the fact that when an application is submitted, the
> RM saves the short username of the user who created the application (See
> submitApplication in ClientRmService). Afterwards when the ApplicationReport
> is requested, the system tries to match the full username of the requester
> against the previously stored short username.
> In a secure cluster using Kerberos this check fails because the principle is
> stripped from the username when we request a short username. So for example
> the short username might be "Foo" whereas the full username is
> "f...@company.com"
> Note: A very similar problem has been previously reported
> ([Yarn-2232|https://issues.apache.org/jira/browse/YARN-2232])
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