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From Maxim Potekhin <>
Subject Best way to implement indexing for high-cardinality values?
Date Thu, 15 Dec 2011 02:34:12 GMT
I now have a CF with extremely skinny rows (in the current implementation),
and the application will want to query by more than one column values.
Problem is that the values in a lot of cases will be high cardinality.
One other factor is that I want to rotate data in and our of the system
in one day buckets -- LILO in effect. The date will be on of the columns
as well.

I had 9 indexes in mind, but I think I can pare it down to 5. At least 
one of the
column I will need to query by, has values that are guaranteed to be 
unique --
there are effectively two ways to identify data for very different part 
of the
complete system. Indexing on that would be bad, wouldn't it?

Any advice would be appreciated.



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