[ http://issues.apache.org/jira/browse/HADOOP-828?page=all ]
Doug Cutting updated HADOOP-828:
--------------------------------
Component/s: dfs
(was: util)
> Need a tool to analyse and verify file block movements
> ------------------------------------------------------
>
> Key: HADOOP-828
> URL: http://issues.apache.org/jira/browse/HADOOP-828
> Project: Hadoop
> Issue Type: New Feature
> Components: dfs
> Affects Versions: 0.9.1
> Reporter: Nigel Daley
> Attachments: Block-Movement-Analysis-Tool-Design.html
>
>
> Occasionally a file is corrupted because a block goes missing. This may occur
> if all the Datanodes containing a given block shutdown or crash, or from
> defects in the Datanode or Namenode code-base. A simple diagnostic tool is
> needed that can trace and analyze the historical movement of the blocks in a
> given file.
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