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Posted to hdfs-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2014/07/21 19:26:40 UTC

[jira] [Commented] (HDFS-366) Support manually fsck in DataNode

    [ https://issues.apache.org/jira/browse/HDFS-366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14068838#comment-14068838 ] 

Allen Wittenauer commented on HDFS-366:
---------------------------------------

I wonder how this works in a post-security world.

> Support manually fsck in DataNode
> ---------------------------------
>
>                 Key: HDFS-366
>                 URL: https://issues.apache.org/jira/browse/HDFS-366
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Lei (Eddy) Xu
>         Attachments: HADOOP-4763.patch, fsck.patch, fsck.patch
>
>
> Now DataNode only support scan all blocks periodically.  Our site need a tool to check some blocks and files manually. 
> My current design is to add a parameter to DFSck to indicate deeply and manually fsck request, then let NameNode collect property block identifies and sent them to associated DataNode. 
> I'll let DataBlockScanner runs in two ways: periodically ( original one ) and manually. 
> Any suggestions on this are welcome. 



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