Fabien Rousseau created CASSANDRA-12015:
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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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