You can specify the BloomFilter parameters or turn it off in your create table statement. Currently the bloom filters are on by default.
-Sanjit On Jul 17, 2009, at 10:35 AM, 孔令华 wrote: > > In my opinion, this kind of performance issue is not in the critical > path (just in mind, no data support, but I think RPCs and disk- > seeking would cost much more time). A clear log is very important, > specially for normal users. > > BTW，according to our tests, using > BloomFilter with the default params costs too many mems (a > RangeServer with 1600 Ranges cost about 9GB, and about 2GB without > BloomFilter). And I found that BloomFilter actually need these mems > instead of fragments. > And at present, BloomFilter affects the whole system, which I think > should be AccessGroup-wide. Using it with the table schema would be > a better choice(eg. appoint them when create table). --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Hypertable Development" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hypertable-dev?hl=en -~----------~----~----~----~------~----~------~--~---
