On Sun, Nov 20, 2011 at 4:01 AM, Boris Yen <[email protected]> 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.
Manually, use nodetool repair in rolling fashion on all the nodes of DC2 > On Thu, Nov 17, 2011 at 10:46 AM, Jeremiah Jordan > <[email protected]> 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, [email protected] 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 <[email protected]> >> wrote: >>> >>> Great - thanks Jake >>> B. >>> >>> On Wed, Nov 16, 2011 at 8:40 PM, Jake Luciani <[email protected]> wrote: >>>> >>>> the former >>>> >>>> On Wed, Nov 16, 2011 at 3:33 PM, Brian Fleming >>>> <[email protected]> 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 >>> >> >> > >
