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From "Bharath Mundlapudi (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-7123) Hadoop Disk Fail Inplace
Date Fri, 28 Jan 2011 20:58:43 GMT
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


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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