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https://issues.apache.org/jira/browse/HADOOP-4761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653173#action_12653173
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Ramya R commented on HADOOP-4761:
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> One can have block locations printed by calling fsck
Using fsck is not that intuitive. It would be useful to have a separate tool
instead. Besides, fsck does not print out the locations given a block-id. It
requires a path to the filename only. Also I was just wondering if we could
have the hostnames printed rather than the IP addresses. Any comments?
> Is that what you need?
To be more precise, I was looking for a utility which would tell if a block is
corrupt or not given the block-id OR given a datanode and a block-id/file,
display if that replica is corrupt or not.
> Tool to give the block location and to check if the block at a given datanode
> is corrupt or not
> -----------------------------------------------------------------------------------------------
>
> Key: HADOOP-4761
> URL: https://issues.apache.org/jira/browse/HADOOP-4761
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Reporter: Ramya R
> Priority: Minor
> Fix For: 0.20.0
>
>
> It would be useful if we could have a command line tool which would list out
> the location of all the replicas of a block given a block-id/filename. Also,
> an utility to check if the block at a given datanode is corrupt or not would
> be of great help in managing the cluster.
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