If I want RR to work, does this mean the consistency level has to be each_quorum or all?
If hinting is off. Read Repair and Manual Repair are the only ways data will get there (just like when a single node is down).On Nov 20, 2011, at 6:01 AM, Boris Yen wrote:A quick question, what if DC2 is down, and after a while it comes back on. how does the data get sync to DC2 in this case? (assume hint is disable)Thanks in advance.On Thu, Nov 17, 2011 at 10:46 AM, Jeremiah Jordan <email@example.com> wrote:Pretty sure data is sent to the coordinating node in DC2 at the same time it is sent to replicas in DC1, so I would think 10's of milliseconds after the transport time to DC2.On Nov 16, 2011, at 3:48 PM, firstname.lastname@example.org wrote:On a related note - assuming there are available resources across the board (cpu and memory on every node, low network latency, non-saturated nics/circuits/disks), what's a reasonable expectation for timing on replication? Sub-second? Less than five seconds?ErnieOn Wed, Nov 16, 2011 at 4:00 PM, Brian Fleming <email@example.com> wrote:
Great - thanks JakeB.On Wed, Nov 16, 2011 at 8:40 PM, Jake Luciani <firstname.lastname@example.org> wrote:
the former--On Wed, Nov 16, 2011 at 3:33 PM, Brian Fleming <email@example.com> wrote:
Hi All,I have a question about inter-data centre replication : if you have 2 Data Centers, each with a local RF of 2 (i.e. total RF of 4) and write to a node in DC1, how efficient is the replication to DC2 - i.e. is that data :- replicated over to a single node in DC2 once and internally replicatedor- replicated explicitly to two separate nodes?Obviously from a LAN resource utilisation perspective, the former would be preferable.Many thanks,Brian