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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3648) improve singleton handling in DataNode
Date Thu, 26 Jun 2008 14:11:45 GMT
improve singleton handling in DataNode
--------------------------------------

                 Key: HADOOP-3648
                 URL: https://issues.apache.org/jira/browse/HADOOP-3648
             Project: Hadoop Core
          Issue Type: Improvement
          Components: dfs
    Affects Versions: 0.19.0
            Reporter: Steve Loughran
            Priority: Minor


when a DataNode is constructed, it saves its identity to a static field:

datanodeObject=this;

1. there's no check on what if this is already set
2. when the datanode terminates, it may want to set this to null



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