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From "Francesco Salbaroli (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4586) Fault tolerant Hadoop Job Tracker
Date Tue, 04 Nov 2008 11:24:46 GMT
Fault tolerant Hadoop Job Tracker

                 Key: HADOOP-4586
                 URL: https://issues.apache.org/jira/browse/HADOOP-4586
             Project: Hadoop Core
          Issue Type: New Feature
          Components: mapred
    Affects Versions: 0.18.0
         Environment: High availability enterprise system
            Reporter: Francesco Salbaroli

The Hadoop framework has been designed, in an eort to enhance perfor-
mances, with a single JobTracker (master node). It's responsibilities varies
from managing job submission process, compute the input splits, schedule
the tasks to the slave nodes (TaskTrackers) and monitor their health.
In some environments, like the IBM and Google's Internet-scale com-
puting initiative, there is the need for high-availability, and performances
becomes a secondary issue. In this environments, having a system with
a Single Point of Failure (such as Hadoop's single JobTracker) is a major
My proposal is to provide a redundant version of Hadoop by adding
support for multiple replicated JobTrackers. This design can be approached
in many dierent ways. 

In the document at: http://sites.google.com/site/hadoopthesis/Home/FaultTolerantHadoop.pdf?attredirects=0

I wrote an overview of the problem and some approaches to solve it.

I post this to the community to gather feedback on the best way to proceed in my work.

Thank you!

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