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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-7154) TokenCache.obtainTokensForNamenodes() to get DTs even when security is off
Date Thu, 01 Nov 2018 13:16:00 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran resolved MAPREDUCE-7154.
---------------------------------------
    Resolution: Won't Fix

> TokenCache.obtainTokensForNamenodes() to get DTs even when security is off
> --------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-7154
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7154
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: client
>    Affects Versions: 3.2.0
>            Reporter: Steve Loughran
>            Priority: Minor
>
> Currently {{TokenCache.obtainTokensForNamenodes()}} returns immediately if security 
disabled. This works when DTs are only built from Kerberos creds, but means that filesystems
which serve up credentials which don't need kerberos (HADOOP-14556 for S3A, ABFS and WASB
can also be enhanced to do this), don't get picked up
> The token cache can just ask each FS for any tokens, relying on them to return null if
they aren't generating/forwarding any



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