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From "Ramya R (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4761) Tool to give the block location and to check if the block at a given datanode is corrupt or not
Date Thu, 04 Dec 2008 05:14:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4761?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653173#action_12653173
] 

Ramya R commented on HADOOP-4761:
---------------------------------

> 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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