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Date: Tue, 15 Apr 2008 09:55:12 -0700 (PDT)
From: "Steve Loughran (JIRA)" <jira@apache.org>
To: core-dev@hadoop.apache.org
Subject: [jira] Created: (HADOOP-3259) Configuration.substituteVars() needs
 to handle security exceptions
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Configuration.substituteVars() needs to handle security exceptions
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                 Key: HADOOP-3259
                 URL: https://issues.apache.org/jira/browse/HADOOP-3259
             Project: Hadoop Core
          Issue Type: Bug
          Components: conf
    Affects Versions: 0.16.2
            Reporter: Steve Loughran
            Priority: Trivial


Inside Configuration.substituteVars(), there is a call to System.getProperty(var); this contains the implicit assumption that the JVM will never block access to a system property, because if that is the case -such as when the Configuration is running under a restrictive security manager, a SecurityException gets thrown. This will get thrown all the way up the tree. 

Better to have some plan to handle it in situ, such as a log@warn level then leave the property unexpanded. 

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