http://hbase.apache.org/book.html#perf.number.of.regions
On 11/9/11 9:25 PM, "吕鹏" <[email protected]> wrote: >Thanks a lot for you help. > >But for question 2 and 3, the Apache book does not get give a direct >answer, specially question 2. > > >2011/11/10 Doug Meil <[email protected]> > >> >> Hi there- >> >> re: #1 >> >> http://hbase.apache.org/book.html#perf.configurations >> >> Regarding this, for the 0.90.x codebase the largest recommended region >> size is 4Gb. The "20Gb" number in the book now was for a cluster >>running >> which was running Hfile v2 format, which is different than what is in >> 0.90.x. I will update the book this weekend. >> >> re: #2 and #3 >> >> See http://hbase.apache.org/book.html#rowkey.design >> >> >> >> On 11/9/11 1:32 AM, "吕鹏" <[email protected]> wrote: >> >> >I have three question: >> >1 How large a region will be, if i want to use map-reduce to analyze >>the >> >data in hbase table. >> >2 How many region in a region server is suitable? >> >3 If the rowkey in my application is not dispersive such as md5 or >>hash, >> >how can i control the hotspot of region split? >> > >> >thx >> >>
