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From "Steve Loughran (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-884) DataNode makeInstance should report the directory list when failing to start up
Date Fri, 08 Jan 2010 18:04:54 GMT
DataNode makeInstance should report the directory list when failing to start up
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                 Key: HDFS-884
                 URL: https://issues.apache.org/jira/browse/HDFS-884
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: data-node
    Affects Versions: 0.22.0
            Reporter: Steve Loughran
            Assignee: Steve Loughran
            Priority: Minor


When {{Datanode.makeInstance()}} cannot work with one of the directories in dfs.data.dir,
it logs this at warn level (while losing the stack trace). 

It should include the nested exception for better troubleshooting. Then, when all dirs in
the list fail, an exception is thrown, but this exception does not include the list of directories.
It should list the absolute path of every missing/failing directory, so that whoever sees
the exception can see where to start looking for problems: either the filesystem or the configuration.



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