My understanding is that support for super columns will remain within the thrift API for the foreseeable future (perhaps indefinitely?) but under the covers, super column families will get transitioned to regular column families with composite column names (https://issues.apache.org/jira/browse/CASSANDRA-3237). If your starting from scratch, this is the approach you should probably take.
Also see the following CQL related:
I'm also very curious about this. How deprecated/discouraged are super columns? Are they going to go away? What are the downsides to using them?
On Fri, Nov 4, 2011 at 5:13 PM, Dwight Smith <Dwight.Smith@alcatel-lucent.com> wrote:
There have been mentions that the use of SuperColumns is not really encouraged, recommendation to use composite columns instead. Will SuperColumns be removed. Any comments greatly appreciated.
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