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From "Ioannis Koltsidas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3585) Hardware Failure Monitoring in large clusters running Hadoop/HDFS
Date Sat, 02 Aug 2008 00:37:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12619174#action_12619174
] 

Ioannis Koltsidas commented on HADOOP-3585:
-------------------------------------------

Thanks for your comment, Otis. By "decoupled" I mean that it is not started directly by a
Hadoop component, as it was in the initial version (then, it was started by NameNode.java,
DataNode.java). However, since FailMon not only uses Hadoop, but also is tailored for Hadoop
log collection, we believe it is a good idea to be part of the project (since this will make
it more visible to people running large clusters, since most of them use Hadoop).

In order to make ti more visible (and more usable in the first place ;), we plan to set up
on a website/wiki for FailMon, where we will upload all info and documentation... 

> Hardware Failure Monitoring in large clusters running Hadoop/HDFS
> -----------------------------------------------------------------
>
>                 Key: HADOOP-3585
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3585
>             Project: Hadoop Core
>          Issue Type: New Feature
>         Environment: Linux
>            Reporter: Ioannis Koltsidas
>            Priority: Minor
>         Attachments: FailMon-standalone.zip, failmon.pdf, failmon.pdf, failmon2.pdf,
FailMon_Package_descrip.html, FailMon_QuickStart.html, HADOOP-3585.patch, HADOOP-3585.patch
>
>   Original Estimate: 480h
>  Remaining Estimate: 480h
>
> At IBM we're interested in identifying hardware failures on large clusters running Hadoop/HDFS.
We are working on a framework that will enable nodes to identify failures on their hardware
using the Hadoop log, the system log and various OS hardware diagnosing utilities. The implementation
details are not very clear, but you can see a draft of our design in the attached document.
We are pretty interested in Hadoop and system logs from failed machines, so if you are in
possession of such, you are very welcome to contribute them; they would be of great value
for hardware failure diagnosing.
> Some details about our design can be found in the attached document failmon.doc. More
details will follow in a later post.

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