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Date: Fri, 24 Sep 2010 18:42:33 -0400 (EDT)
From: "Suresh Srinivas (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Subject: [jira] Commented: (HADOOP-6951) Distinct minicluster services (e.g.
 NN and JT) overwrite each other's service policies
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    [ https://issues.apache.org/jira/browse/HADOOP-6951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12914689#action_12914689 ] 

Suresh Srinivas commented on HADOOP-6951:
-----------------------------------------

This code in common breaks HDFS. Currently HDFS trunk does not compile! HDFS-1422 has been files for this. Please close it, if it is not necessary.

> Distinct minicluster services (e.g. NN and JT) overwrite each other's service policies
> --------------------------------------------------------------------------------------
>
>                 Key: HADOOP-6951
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6951
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: security
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>             Fix For: 0.22.0
>
>         Attachments: hadoop-6951.1.txt, hadoop-6951.2.txt, hadoop-6951.txt.0
>
>
> Because the protocol -> ACL mapping in ServiceAuthorizationManager is static, services which are run in the same JVM have the potential to clobber the other's service authorization ACLs whenever ServiceAuthorizationManager.refresh() is called. This causes authorization failures if one tries to launch a 2NN connected to a minicluster with hadoop.security.authorization enabled. Seems like each service should have its own instance of a ServiceAuthorizationManager, instead of using static methods.

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