Well I went with the definition from wikipedia and that definition rules
out #1 so it is #2 and it is just one matching row in my case.

On Sat, Oct 15, 2016 at 2:40 AM, DuyHai Doan <doanduy...@gmail.com> wrote:

> Define precisely what you mean by "high cardinality columns". Do you mean:
> 1) a single indexed value is present in a lot of rows
> 2) a single indexed value has only a few (if not just one) matching row
> On Sat, Oct 15, 2016 at 8:37 AM, Kant Kodali <k...@peernova.com> wrote:
>> I understand Secondary Indexes in general are inefficient on high
>> cardinality columns but since SASI is built from scratch I wonder if the
>> same argument applies there? If not, Why? Because I believe primary keys in
>> Cassandra are indeed indexed and since Primary key is supposed to be the
>> column with highest cardinality why not do the same for secondary indexes?

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