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From Apache Wiki <>
Subject [Cassandra Wiki] Update of "ReadRepair" by jeremyhanna
Date Mon, 25 Jul 2011 18:42:28 GMT
Dear Wiki user,

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The "ReadRepair" page has been changed by jeremyhanna:

Adding special case for range scans against CL.ONE

  This means that in almost all cases, at most the first instance of a query will return old
+ One special case to consider: when doing range scans at !ConsistencyLevel ONE, read repair
is not done at all - neither before returning nor as a background thread.  This is especially
relevant for the built-in Hadoop support.  By default it uses !ConsistencyLevel ONE and does
range scans through the column family.

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