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From "Bharath Mundlapudi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-7123) Hadoop Disk Fail Inplace
Date Wed, 02 Mar 2011 08:39:37 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13001334#comment-13001334
] 

Bharath Mundlapudi commented on HADOOP-7123:
--------------------------------------------


Hi Wang Xu, 

I have some comments regarding HDFS-1362. I will provide my comments on that jira. 


> Hadoop Disk Fail Inplace
> ------------------------
>
>                 Key: HADOOP-7123
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7123
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Bharath Mundlapudi
>            Assignee: Bharath Mundlapudi
>
> This is an umbrella Jira for tracking all the issues and work related for handling disk
failures across the Hadoop stack. Today, Hadoop handles disk failures to some extent but not
all the issues. This involves understanding both startup and runtime issues related to disk
failures in the Hadoop components. 
> Scope: The initial scope of work will only be for DataNode and TaskTracker related disk
failure issues. 
> Methodology: Injecting disk failures in SCSI layer at various runtime points of Hadoop
and observing Hadoop's behavior for improvement. 

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