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https://issues.apache.org/jira/browse/YARN-5423?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15389860#comment-15389860
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Daniel Templeton commented on YARN-5423:
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While I completely agree that it's sysadmin 101, I don't think that makes it a
non-issue for YARN. YARN has no concept of UID or GID exposed to the user at
any level. Either we should be clear in the docs up front that the usernames
are materialized into UIDs on the NMs for localization purposes, and that
there's a per user cache that hangs around between jobs, so don't freaking
change the UID mappings, or we should actually be independent of UIDs.
> Yarn applications are failing when job submitter use is re-created in OS.
> -------------------------------------------------------------------------
>
> Key: YARN-5423
> URL: https://issues.apache.org/jira/browse/YARN-5423
> Project: Hadoop YARN
> Issue Type: Bug
> Components: applications
> Affects Versions: 2.7.1
> Reporter: Surendra Singh Lilhore
>
> When we re-create user in OS, user ID may change. If we run application from
> the same user again, application will not able to write data in user NM local
> directory
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