With Beryllium-SR3, I just verified using tcpdump on port 2550 that the data for the read operation at the follower came over the network from the shard leader.
Is there any plan with Boron to make it a local read from the replica? On Wed, Sep 14, 2016 at 1:43 PM, Srini Seetharaman < srini.seethara...@gmail.com> wrote: > Hi Tom and Moiz > Is it still the case with Beryllium and Boron that the read transactions > from a follower are forwarded to the leader? > > Thanks > Srini. > > On Sat, Feb 28, 2015 at 8:26 AM, Tom Pantelis <tompante...@gmail.com> > wrote: > >> Colin, Tianzhu >> >> Reads are also forwarded to the leader so, yes, remote reads would take >> longer. With IMDS, reads are actually synchronous so the returned Future is >> immediate but with CDS, the read is async, whether it's local or not. So >> it's best to not block on the Future as there will be some latency with >> CDS, but rather use a Future callback if possible. >> >> Tom >> >> On Sat, Feb 28, 2015 at 10:42 AM, Colin Dixon <co...@colindixon.com> >> wrote: >> >>> I'm cc'ing controller-dev since they will have the authoritative answer. >>> >>> I *think* the answer is that all data is replicated to all nodes in the >>> cluster and so all reads can be local. Only writes have to go to the shard >>> leader, but I could be wrong. >>> >>> Moiz and Tom Pantelis would know more. >>> >>> --Colin >>> >>> >>> On Sat, Feb 28, 2015 at 4:55 AM, 我心永恒 <zhuzhuaiqiqi1...@gmail.com> >>> wrote: >>> >>>> Dear all, I am studying ODL and have one question: >>>> >>>> When a consumer launches a read transaction, if I'm not wrong, it has >>>> to be forwarded to the primary shard controller. So if this case is >>>> possible that the transaction is remote and the consumer has to wait longer >>>> since the transaction is not local? >>>> >>>> Thanks & regards >>>> Tianzhu >>>> >>>> >>>> _______________________________________________ >>>> documentation mailing list >>>> documentat...@lists.opendaylight.org >>>> https://lists.opendaylight.org/mailman/listinfo/documentation >>>> >>>> >>> >>> _______________________________________________ >>> controller-dev mailing list >>> controller-dev@lists.opendaylight.org >>> https://lists.opendaylight.org/mailman/listinfo/controller-dev >>> >>> >> >> _______________________________________________ >> controller-dev mailing list >> controller-dev@lists.opendaylight.org >> https://lists.opendaylight.org/mailman/listinfo/controller-dev >> >> >
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