Also, you might have read that an initial loading of data can be better distributed across the cluster if the table is pre-split rather than starting with a single region and splitting (possibly aggressively, depending on the throughput) as the data loads in. Once you are in a stable state with regions distributed across the cluster, there is really no benefit in terms of spreading load by managing splitting manually v/s letting HBase do it for you. At that point it's about what Ian mentioned - predictability of latencies by avoiding splits happening at a busy time.
On Thu, Aug 30, 2012 at 4:26 PM, Ian Varley <[email protected]> wrote: > The Facebook devs have mentioned in public talks that they pre-split their > tables and don't use automated region splitting. But as far as I remember, > the reason for that isn't predictability of spreading load, so much as > predictability of uptime & latency (they don't want an automated split to > happen at a random busy time). Maybe that's what you mean, Mohit? > > Ian > > On Aug 30, 2012, at 5:45 PM, Stack wrote: > > On Thu, Aug 30, 2012 at 7:35 AM, Mohit Anchlia <[email protected] > <mailto:[email protected]>> wrote: > From what I;ve read it's advisable to do manual splits since you are able > to spread the load in more predictable way. If I am missing something > please let me know. > > > Where did you read that? > St.Ack > >
