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From Stack <st...@duboce.net>
Subject Re: hbase table with ~10k columns
Date Thu, 10 Feb 2011 17:37:10 GMT
Tell us more about your cluster.  Tell us more about your configs.
Can you move to 0.90.0 hbase?  Its been out for a little while now and
has perf improvements over 0.20.6.


On Thu, Feb 10, 2011 at 4:15 AM, Alex Slatman <info@slatman.nl> wrote:
> Hello,
> I don't know if this is the correct mailinglist to ask a question like mine.
> If not please be so kind to redirect me to the correct malinglist.
> At this moment we have a small cluster running hadoop and hbase. We are
> experimenting with different sized tables and performance options. (Using
> hbase 20.06). In our testing environment we have a table containing ~20
> million rows with having 2 column families. Each column family has (at most)
> 10.000 columns. To my knowledge data is stored on a per row per columnfamily
> basis. We see performance dropping a lot when the number of columns in a
> columnfamily increases. Is there a way to improve performance or am I
> missing something here?
> I already tried setting the columnfamily IN_MEMORY and decreasing blocksize.
> Unfortunately with no result. I hope someone could point me in the right
> direction,
> Kind regards,
> Alex

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