Jeff Jirsa commented on CASSANDRA-14311:

Interessting.  If the page border spans to another token, you'd still want to 
fill the whole page, wouldn't you? I assume sos. 

Doesn't the driver already have an option to choose the next host in the ring 
if it determines the paging state is beyond the original coordinator's boundary?

> Allow Token-Aware drivers for range scans
> -----------------------------------------
>                 Key: CASSANDRA-14311
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14311
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Coordination
>            Reporter: Avi Kivity
>            Priority: Major
> Currently, range scans are not token aware. This means that an extra hop is 
> needed for most requests. Since range scans are usually data intensive, this 
> causes significant extra traffic.
> Token awareness could be enabled by having the coordinator return the token 
> for the next (still unread) row in the response, so the driver can select a 
> next coordinator that owns this row.

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