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https://issues.apache.org/jira/browse/HDFS-808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved HDFS-808.
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Resolution: Duplicate
> 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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