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https://issues.apache.org/jira/browse/HADOOP-2373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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dhruba borthakur updated HADOOP-2373:
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    Component/s: dfs

> Name node silently changes state
> --------------------------------
>
>                 Key: HADOOP-2373
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2373
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.16.0
>            Reporter: Robert Chansler
>            Assignee: Konstantin Shvachko
>
> 1. The name node should create a log message when entering the "extension" 
> period of safe mode after achieving the minimal replication threshold.
> Logging state changes is a Good Idea. When diagnosing 2159, there is no 
> evidence whether the name node is in the extension period or not.
> 2. When in safe mode, the name node should periodically explain _why_ it is 
> still in safe mode. (2159 again)

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