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From "Wang Xu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-7123) Hadoop Disk Fail Inplace
Date Thu, 17 Feb 2011 03:00:24 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12995651#comment-12995651

Wang Xu commented on HADOOP-7123:

Hi folks,

Could HDFS-1362 be treated as a solution on DataNode? Or any other features are required?

For now, HDFS-457 could stop service of failed disks and HDFS-1362 could add disks or re-enable
disks after repaired them by means of reconfigure DataNode based on HADOOP-7001.

> 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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