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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-95) dfs validation
Date Thu, 31 Aug 2006 19:09:23 GMT
    [ http://issues.apache.org/jira/browse/HADOOP-95?page=comments#action_12431947 ] 
Bryan Pendleton commented on HADOOP-95:

I think Eric's comment (http://issues.apache.org/jira/browse/HADOOP-95#action_12371188) is
still important. But, probably a new issue to bring up. Ongoing validation/balancing/etc.
are still problems - the "fsck" utility just covers the top-level problem.

> dfs validation
> --------------
>                 Key: HADOOP-95
>                 URL: http://issues.apache.org/jira/browse/HADOOP-95
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.1.0
>            Reporter: Hairong Kuang
>         Attachments: AccumulatingReducer.java, IOMapperAdapter.java, TestDFSIO.java,
> Dfs needs a validation operation similiar to fsck, so that we get to know the files that
are corrupted and which data blocks are missing.
> Dfs namenode also needs to log more specific information such as which block is replication
or is deleted. So when something goes wrong, we have a clue what has happened.

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