On Fri, Jun 24, 2016 at 2:31 PM, Anubhav Kale <anubhav.k...@microsoft.com> wrote:
> So, can someone educate me on how token aware policies in drivers really > work ? It appears that it’s quite possible that the data may live on nodes > that don’t own the tokens for it. By “own” I mean the ownership as defined > in system.local / peers and is fed back to drivers. > The tokens in system.local/peers are accurate. Combined with the replication settings for a keyspace, drivers can accurately determine which nodes are replicas for a given partition. Even if the driver's calculation is incorrect for some reason, token-aware routing is just an optimization. Nothing will break if a query is sent to a node that's not a replica. -- Tyler Hobbs DataStax <http://datastax.com/>
