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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] Created: (HDFS-808) Implement something like PAR2 support?
Date Fri, 04 Dec 2009 16:44:20 GMT
Implement something like PAR2 support?
--------------------------------------

                 Key: HDFS-808
                 URL: https://issues.apache.org/jira/browse/HDFS-808
             Project: Hadoop HDFS
          Issue Type: New Feature
            Reporter: Allen Wittenauer
            Priority: Minor


We really need an Idea issue type, because I'm not sure if this is really viable. :)  Just
sort of thinking "out loud".

I was thinking about how file recovery works on services like Usenet to fix data corruption
when chunks of files are missing.  I wonder how hard it would be to implement something like
PAR2 [ http://en.wikipedia.org/wiki/Parchive ] automatically for large files.  We'd have the
advantage of being able to do it in binary of course and could likely hide the details within
HDFS itself.  



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