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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Created: (CASSANDRA-982) read repair on quorum consistencylevel
Date Thu, 15 Apr 2010 14:54:50 GMT
read repair on quorum consistencylevel
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                 Key: CASSANDRA-982
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-982
             Project: Cassandra
          Issue Type: New Feature
          Components: Core
            Reporter: Jonathan Ellis
            Priority: Minor
             Fix For: 0.7


CASSANDRA-930 made read repair "fuzzy optional," but this only helps with ConsistencyLevel.ONE:

- Quorum reads always send requests to all nodes
- only the first Quorum's worth of responses get compared

So what we'd like to do two changes:

- only send read requests to the closest R live nodes
- if read repair is enabled, also compare results from the other nodes in the background


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