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From "Robert Chansler (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HDFS-567) Two contrib tools to facilitate searching for block history information
Date Fri, 09 Oct 2009 19:17:31 GMT

     [ https://issues.apache.org/jira/browse/HDFS-567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Chansler updated HDFS-567:
---------------------------------

    Release Note: New contribution Block Forensics aids investigation of missing blocks. 
(was: Add block forensics contrib tool to print history of corrupt and missing blocks from
the HDFS logs.)

Editorial pass over all release notes prior to publication of 0.21.

> Two contrib tools to facilitate searching for block history information 
> ------------------------------------------------------------------------
>
>                 Key: HDFS-567
>                 URL: https://issues.apache.org/jira/browse/HDFS-567
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: tools
>    Affects Versions: 0.21.0
>            Reporter: Bill Zeller
>            Assignee: Jitendra Nath Pandey
>             Fix For: 0.21.0
>
>         Attachments: hdfs-567-1.patch, hdfs-567-2.patch, hdfs-567-3.patch, hdfs-567-4.patch,
hdfs-567-5.patch, hdfs-567-6.patch
>
>   Original Estimate: 5h
>  Remaining Estimate: 5h
>
> Includes a java program to query the namenode for corrupt replica information at some
interval. If a corrupt replica is found, a map reduce job is launched that will search (supplied)
log files for one or more block ids. The mapred job can be used independently of the java
client program and can also be used for arbitrary text searches. 

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