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https://issues.apache.org/jira/browse/MAPREDUCE-458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Harsh J resolved MAPREDUCE-458.
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Resolution: Not A Problem
This discussion has gone stale. I wonder if we see major issues with current
DistributedCache features today that does proper caching and works across jobs
too.
> Adding caching to Hadoop which is independent of the task trackers.
> -------------------------------------------------------------------
>
> Key: MAPREDUCE-458
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-458
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Mahadev konar
> Assignee: Owen O'Malley
> Priority: Minor
>
> It would be nice to have a feature in Hadoop that could cache files locally
> that is independent of TaskTrackers and JobTrackers. Hadoop-288 caching is
> dependent on the tasktrackers. In an environment where you would dynamically
> bring up and down the TaskTrackers for resource sharing, that is problematic.
> It would be good to have this feature wherein you can install
> tasktrackers/jobtrackers on these machines using this caching mechanism. The
> caching feature could use something like Bittorent /http/rsync to copy the
> main hadoop.jar.
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