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Date: Wed, 18 May 2011 17:54:47 +0000 (UTC)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: common-dev@hadoop.apache.org
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Subject: [jira] [Created] (HADOOP-7300) Configuration methods that return
 collections are inconsistent about mutability
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Configuration methods that return collections are inconsistent about mutability
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                 Key: HADOOP-7300
                 URL: https://issues.apache.org/jira/browse/HADOOP-7300
             Project: Hadoop Common
          Issue Type: Bug
          Components: conf
    Affects Versions: 0.22.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon
             Fix For: 0.22.0
         Attachments: hadoop-7300.txt

In particular, getTrimmedStringCollection seems to return an immutable collection, whereas getStringCollection returns a mutable one.

IMO we should always return mutable collections since these methods by definition are doing copies.

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