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Date: Tue, 5 Oct 2010 21:40:32 -0400 (EDT)
From: "Alejandro Abdelnur (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-6988) Add support for reading multiple
 hadoop delegation token files
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    [ https://issues.apache.org/jira/browse/HADOOP-6988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12918379#action_12918379 ] 

Alejandro Abdelnur commented on HADOOP-6988:
--------------------------------------------

PLEASE, DO NOT REMOVE THIS VARIABLE:

Oozie relies on this variable to be able to dispatch mapreduce/streaming/pipes/pig/hive/sqoop actions. Oozie uses a launcher MR job to start all those action types. This launcher MR job uses the variable to propagate the delegation token to the code that launches the corresponding action.

> 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
>
> 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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