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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3998) Speed up fsck
Date Tue, 02 Oct 2012 23:55:07 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468200#comment-13468200
] 

Todd Lipcon commented on HDFS-3998:
-----------------------------------

Isn't this basically equivalent to the listcorruptfiles.jsp that we've got?
                
> Speed up fsck
> -------------
>
>                 Key: HDFS-3998
>                 URL: https://issues.apache.org/jira/browse/HDFS-3998
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>            Reporter: Ming Ma
>
> We have some big clusters. Sometimes we want to find out the list of missing blocks or
blocks with only one replica quickly. Currently fsck has to take a path as input and it then
recursively check for inconsistency. That could take a long time to find the missing blocks
and the files the missing blocks belong to. It will be useful to speed this up. For example,
it could go directly to missing blocks stored in NN and do the file lookup instead.

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