cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Apache Wiki <wikidi...@apache.org>
Subject [Cassandra Wiki] Update of "ReadRepair" by jeremyhanna
Date Mon, 25 Jul 2011 18:42:28 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Cassandra Wiki" for change notification.

The "ReadRepair" page has been changed by jeremyhanna:
http://wiki.apache.org/cassandra/ReadRepair?action=diff&rev1=3&rev2=4

Comment:
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
data.
  
+ 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.
+ 

Mime
View raw message