On Tue, Jul 23, 2013 at 3:23 AM, bjbylh <bjb...@me.com> wrote: > 1,how many column families can be created in a cluster?is there a limit to > the number of it? >
Low number of hundreds is highest practical. The limit in practice is amount of heap, each CF consumes heap. > 2,it spents 2-5 seconds to create a new cf while the cluster contains > about 10000 cfs(if the cluster is empty,it spents about 0.5s).is it > normal?how to improve the efficiency of creating cf? > > Yes, that doesn't seem surprising to me. See above. =Rob
