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 < jeremiah.jor...@morningstar.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, ehers...@gmail.com 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? > > Ernie > > On Wed, Nov 16, 2011 at 4:00 PM, Brian Fleming > <bigbrianflem...@gmail.com>wrote: > >> Great - thanks Jake >> >> B. >> >> On Wed, Nov 16, 2011 at 8:40 PM, Jake Luciani <jak...@gmail.com> wrote: >> >>> the former >>> >>> >>> On Wed, Nov 16, 2011 at 3:33 PM, Brian Fleming < >>> bigbrianflem...@gmail.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 >>>> replicated >>>> or >>>> - replicated explicitly to two separate nodes? >>>> >>>> Obviously from a LAN resource utilisation perspective, the former would >>>> be preferable. >>>> >>>> Many thanks, >>>> >>>> Brian >>>> >>>> >>> >>> >>> -- >>> http://twitter.com/tjake >>> >> >> > >
