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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6948) There's no way to remove a property from a Configuration
Date Thu, 16 Sep 2010 21:43:33 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6948?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Doug Cutting updated HADOOP-6948:
---------------------------------

           Status: Patch Available  (was: Open)
         Assignee: Mike Baranczak
    Fix Version/s: 0.22.0

This looks reasonable to me.  Let's see what Hudson says.

> There's no way to remove a property from a Configuration
> --------------------------------------------------------
>
>                 Key: HADOOP-6948
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6948
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 0.21.0, 0.20.2
>         Environment: all
>            Reporter: Mike Baranczak
>            Assignee: Mike Baranczak
>            Priority: Minor
>             Fix For: 0.22.0
>
>         Attachments: HADOOP-6948.patch
>
>
> The Configuration class has a lot of methods for setting properties, but it's impossible
to remove a property once it's set. Trying to set it to null results in a NullPointerException,
since java.util.Properties doesn't allow null values. When building a Configuration programmatically,
this can be a problem. 

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