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From "sankalp kohli (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-9876) One way targeted repair
Date Thu, 23 Jul 2015 00:31:05 GMT
sankalp kohli created CASSANDRA-9876:

             Summary: One way targeted repair
                 Key: CASSANDRA-9876
             Project: Cassandra
          Issue Type: Improvement
            Reporter: sankalp kohli
            Priority: Minor

Many applications use C* by writing to one local DC. The other DC is used when the local DC
is unavailable. When the local DC becomes available, we want to run a targeted repair b/w
one endpoint from each DC to minimize the data transfer over WAN.  In this case, it will be
helpful to do a one way repair in which data will only be streamed from other DC to local
DC instead of streaming the data both ways. This will further minimize the traffic over WAN.
This feature should only be supported if a targeted repair is run involving 2 hosts.

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