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From Ivan Chang <>
Subject How does Cassandra store data physically?
Date Wed, 01 Jul 2009 19:00:56 GMT
I am wondering how Cassandra stores its columns, super columns in the
database files?

A supercolumn logically groups a set of related columns together, when the
supercolumn is written to file, are the columns also stored in adjacent
blocks to each other so IO cost is minimized for related data?  What about
individual columns not associated with any supercolumn, but related only
through a given key?


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