[jira] [Created] (CASSANDRA-7584) SSTableLoder Multi-DC Improvment

["Cliff Gilmore (JIRA)" <ji...@apache.org>]

Cliff Gilmore created CASSANDRA-7584:
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             Summary: SSTableLoder Multi-DC Improvment
                 Key: CASSANDRA-7584
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7584
             Project: Cassandra
          Issue Type: Improvement
          Components: Tools
            Reporter: Cliff Gilmore


Right now SSTableLoader requires connectivity to the entire cluster to stream data. This becomes a problem when the cluster grows to be more than a single datacenter. The primary concern is that many replicas will be sent across the WAN resulting in a much larger network burden than would be ideal. Also, allowing SSTableLoader to reach across the networks can be a security burden on the implementation. 

A possible solution to this situation is to have the local datacenter nodes do a streaming relay of a single replica out to each additional datacenter where it is then relayed internally as appropriate.



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