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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4763) Support manually fsck in DataNode
Date Wed, 03 Dec 2008 18:33:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12652887#action_12652887

Konstantin Shvachko commented on HADOOP-4763:

Is it similar to the discussion in HADOOP-4761?

> Support manually fsck in DataNode
> ---------------------------------
>                 Key: HADOOP-4763
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4763
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Lei Xu
> 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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