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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-884) DataNode makeInstance should report the directory list when failing to start up
Date Thu, 30 Dec 2010 23:13:47 GMT

    [ https://issues.apache.org/jira/browse/HDFS-884?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976142#action_12976142
] 

Eli Collins commented on HDFS-884:
----------------------------------

+1   latest patch looks good.

> DataNode makeInstance should report the directory list when failing to start up
> -------------------------------------------------------------------------------
>
>                 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
>             Fix For: 0.22.0
>
>         Attachments: HDFS-884.patch, HDFS-884.patch, InvalidDirs.patch
>
>
> 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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