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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3648) improve singleton handling in DataNode
Date Wed, 20 May 2009 16:20:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3648?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steve Loughran updated HADOOP-3648:
-----------------------------------

    Affects Version/s:     (was: 0.19.0)
                       0.20.0

> 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: 0.20.0
>            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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