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Posted to common-dev@hadoop.apache.org by "Hemanth Yamijala (JIRA)" <ji...@apache.org> on 2009/09/01 16:00:32 UTC

[jira] Created: (HADOOP-6228) Configuration should allow storage of null values.

Configuration should allow storage of null values.
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                 Key: HADOOP-6228
                 URL: https://issues.apache.org/jira/browse/HADOOP-6228
             Project: Hadoop Common
          Issue Type: Bug
          Components: conf
            Reporter: Hemanth Yamijala


Currently the configuration class does not allow null keys and values. Null keys don't make sense, but null values may have semantic meaning for some features. Not storing these values in configuration causes some arguable side effects. For instance, if a value is defined in defaults, but wants to be disabled in site configuration by setting it to null, there's no way to do this currently. Also, no track of keys with null values is recorded. Hence, tools like dump configuration (HADOOP-6184) would not display these properties.

Does this seem like a sensible use case ?

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