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