Thats correct
On Tue, Nov 13, 2012 at 7:06 PM, Wz1975 <wz1...@yahoo.com> wrote: > From my understanding, if CL = 2, one read, one digest are sent. Only > if it is read repair, digest is sent to all replicates. > > > Thanks. > -Wei > > Sent from my Samsung smartphone on AT&T > > > -------- Original message -------- > Subject: Re: Read during digest mismatch > From: Edward Capriolo <edlinuxg...@gmail.com> > To: "user@cassandra.apache.org" <user@cassandra.apache.org> > CC: > > > I think the code base does not benefit from having too many different read > code paths. Logically what your suggesting is reasonable, but you have to > consider the case of one being slow to respond. > > Then what? > > On Tuesday, November 13, 2012, Manu Zhang <owenzhang1...@gmail.com> wrote: > > If consistency is two, don't we just send data request to one and digest > request to another? > > > > On Mon, Nov 12, 2012 at 2:49 AM, Jonathan Ellis <jbel...@gmail.com> > wrote: > >> > >> Correct. Which is one reason there is a separate setting for > >> cross-datacenter read repair, by the way. > >> > >> On Thu, Nov 8, 2012 at 4:43 PM, sankalp kohli <kohlisank...@gmail.com> > wrote: > >> > Hi, > >> > Lets say I am reading with consistency TWO and my replication is > 3. The > >> > read is eligible for global read repair. It will send a request to > get data > >> > from one node and a digest request to two. > >> > If there is a digest mismatch, what I am reading from the code looks > like it > >> > will get the data from all three nodes and do a resolve of the data > before > >> > returning to the client. > >> > > >> > Is it correct or I am readind the code wrong? > >> > > >> > Also if this is correct, look like if the third node is in other DC, > the > >> > read will slow down even when the consistency was TWO? > >> > > >> > Thanks, > >> > Sankalp > >> > > >> > > >> > >> > >> > >> -- > >> Jonathan Ellis > >> Project Chair, Apache Cassandra > >> co-founder of DataStax, the source for professional Cassandra support > >> http://www.datastax.com > > > > >
