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https://issues.apache.org/jira/browse/CASSANDRA-8060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Brown reassigned CASSANDRA-8060:
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    Assignee:     (was: Jason Brown)

> Geography-aware, distributed replication
> ----------------------------------------
>
>                 Key: CASSANDRA-8060
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8060
>             Project: Cassandra
>          Issue Type: Wish
>            Reporter: Donald Smith
>            Priority: Major
>
> We have three data centers in the US (CA in California, TX in Texas, and NJ 
> in NJ), two in Europe (UK  and DE), and two in Asia (JP and CH1).  We do all 
> our writing to CA.  That represents a bottleneck, since the coordinator nodes 
> in CA are responsible for all the replication to every data center.
> Far better if we had the option of setting things up so that CA replicated to 
> TX , which replicated to NJ. NJ is closer to UK, so NJ should be responsible 
> for replicating to UK, which should replicate to DE.  Etc, etc.
> This could be controlled by the topology file.
> The replication could be organized in a tree-like structure instead of a 
> daisy-chain.
> It would require architectural changes and would have major ramifications for 
> latency but might be appropriate for some scenarios.



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