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From "Miles Osborne" <mi...@inf.ed.ac.uk>
Subject Re: What's the best way to get to a single key?
Date Mon, 03 Mar 2008 22:32:10 GMT
It should be possible to use the hash of a key to work-out which shard it is
present in;  you would then search over all entries in the relevant shard.

Miles

On 03/03/2008, Xavier Stevens <Xavier.Stevens@fox.com> wrote:
>
> I am curious how others might be solving this problem.  I want to
> retrieve a record from HDFS based on its key.  Are there any methods
> that can shortcut this type of search to avoid parsing all data until
> you find it?  Obviously Hbase would do this as well, but I wanted to
> know if there is a way to do it using just Map/Reduce and HDFS.
>
> Thanks,
>
>
> -Xavier
>
>


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