On Fri, Jul 9, 2010 at 4:32 AM, Jonathan Ellis <jbel...@gmail.com> wrote: > If the coordinator knows it can't achieve the requested CL it won't do > any writes, hinted or otherwise, and will immediately report > UnavailableException to the client.
> To summarize: hinted writes are only generated when Cassandra (a) > knows a target is down ahead of time and (b) still has enough UP > targets to satisfy the requested CL. Ok, If so, I suppose that A sends requests to B, C and D nodes(RF=3) at * CL.QUORUM*, but D is down, then return success message to the client, and* A write a hint to E node*? until D comes back up then E forwards the data to D? Thanks. Shen