joao-r-reis commented on PR #1793:
URL: 
https://github.com/apache/cassandra-gocql-driver/pull/1793#issuecomment-2489184734

   I think keeping this focused on the virtual table use case is best. Other 
routing preferences like shard awareness for scylla should probably be handled 
at the `HostSelectionPolicy` level. For this, we could add a function on Query 
and Batch that allows the `HostSelectionPolicy` to be provided instead of using 
the session level one but this can be handled on a separate JIRA and PR, it's a 
different use case than this one which is focused on virtual table queries that 
should be strongly associated with a specific host.
   
   If a user sets the host using `Query.SetHost()` then either we disable 
retries and speculative executions altogether for that query or we allow 
retries and speculative executions only on that host (basically the host 
selection policy should never be used in the context of this query).
   
   In the future if we add a way to provide a `HostSelectionPolicy` in addition 
to `.SetHost()` then the driver should probably return an error saying that you 
can't simultaneously set a host and provide a policy on the same query.


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