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Date: Wed, 30 Nov 2011 21:38:04 -0800
From: Thorsten von Eicken <tve@rightscale.com>
Organization: RightScale, Inc.
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To: user@cassandra.apache.org
Subject: read repair and column range queries
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Looking at the docs, I can't conclusively answer this question:

Suppose I make this CQL query with consistency factor 1 and read-repair
100%:
select 'a'..'z' from cf where key = 'xyz' limit 5;
Suppose the node I connect to has the key and responds with (improvised
syntax):
['a'->0, 'c'->2, 'e'->4, 'g'->6, 'i'->8]
Suppose another node has a column 'b'->1, would this be caught by the
read repair?

The question really boils down to whether the digest query being sent is
the same as the one above, or whether it's more of the form "select a,
c, e, g, i from cf where key = xyz" and thus only checks whether the
column values are in agreement.

Thanks!
Thorsten