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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6988) Add support for reading multiple hadoop delegation token files
Date Wed, 06 Oct 2010 20:05:32 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918648#action_12918648
] 

Eli Collins commented on HADOOP-6988:
-------------------------------------

Being able to specify both MR and HDFS delegation token files upfront when submitting a job
seems reasonable, avoids requiring all clients kinit or use a tool to merge token files. 
 Env variable philosophy aside (Allen, want to open a jira with an alternative?) does anyone
object to modifying this existing variable so more than one file can be specified?


> Add support for reading multiple hadoop delegation token files
> --------------------------------------------------------------
>
>                 Key: HADOOP-6988
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6988
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: security
>    Affects Versions: 0.22.0
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>         Attachments: hadoop-6988.0.txt, hadoop-6988.1.txt
>
>
> It would be nice if there were a way to specify multiple delegation token files via the
HADOOP_TOKEN_FILE_LOCATION environment variable and the "mapreduce.job.credentials.binary"
configuration value. I suggest a colon-separated list of paths, each of which is read as a
separate delegation token file.

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