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From Boris Yen <>
Subject Default behavior of generate index_name for columns...
Date Fri, 15 Jul 2011 09:55:13 GMT

I have a few column families, each has a column called user_name. I tried to
use secondary index on user_name column for each of the column family.
However, when creating these column families, cassandra keeps reporting
"Duplicate index name..." exception. I finally figured out that it seems the
default index name is "column name"+"_idx", this make my column family
violate the "uniqueness of index name" rule.

I was wondering if the default index_name generating rule could be like
"column name"+"cf name", so the index name would not collide with each other
that easily, if the user do not assign "index_name" when creating a column


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