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From Stack <st...@duboce.net>
Subject Re: Recommendation for migrating region server implementations
Date Thu, 24 Mar 2011 19:54:57 GMT
Do you have disk space to spare?  I'd think that all that is different
about indexed hbase is the WAL format.  If you had an hbase.rootdir
that was the product of a clean shutdown with no WALs to process, I'd
think you could just 0.90.x on top of it.  If you had the disk space
you could give it a go?

On Thu, Mar 24, 2011 at 12:15 PM, George P. Stathis
<gstathis@traackr.com> wrote:
> Hey folks,
> What would be the best approach for migrating away from a given region
> server implementation back to the default out-of-the box one? My goal here
> is to upgrade our cluster to 0.90 and migrate away from IndexedRegionServer
> back to the default HRegionServer.
> The only options that I know of at the moment are:
>   - Export/Import - pros: straightforward, cons: tedious, takes a long time
>   - org.apache.hadoop.hbase.mapreduce.CopyTable - not sure about the pros
>   and cons here because I've never used it. It seems to require that tables
>   are moved to a different setup. Can it be used in place?
> If folks know of a different way to do this, please let me know.
> Thank you in advance for your time.
> -GS

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