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From "Fabien Rousseau (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-12015) Rebuilding from another DC should use different sources
Date Thu, 16 Jun 2016 09:15:05 GMT
Fabien Rousseau created CASSANDRA-12015:
-------------------------------------------

             Summary: Rebuilding from another DC should use different sources
                 Key: CASSANDRA-12015
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12015
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Fabien Rousseau


Currently, when adding a new DC (ex: DC2) and rebuilding it from an existing DC (ex: DC1),
only the closest replica is used as a "source of data".
It works but is not optimal, because in case of an RF=3 and 3 nodes cluster, only one node
in DC1 is streaming the data to DC2. 

To build the new DC in a reasonable time, it would be better, in that case, to stream from
multiple sources, thus distributing more evenly the load.




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