Ohhk .. Thanks wellington .. I will check it out .. Thanks and Regards, Vimal Jain On Jun 15, 2014 5:06 PM, "Wellington Chevreuil" < [email protected]> wrote:
> Hi Vimal, > > Adding to Dima's comment, just be aware about how large your rows will > become in bytes, with so much cqs. If you end up with a row larger than the > configured size limit for regions, regionserver will have problems to split > the region. Also, if your schema is defined by very wide rows, where most > of your data is stored in few rows, then you may face performance problems, > because most of your data will be stored on single regions, thus being > served by the same RegionServer. > > To understand a little more about how data is split in hbase, and the > implications it can have to performance, you can look at the links below: > > http://hbase.apache.org/book/regions.arch.html#arch.region.splits > http://hbase.apache.org/book/ops.capacity.html#ops.capacity.regions.count > > Cheers. > > > 2014-06-15 12:08 GMT+01:00 Dima Spivak <[email protected]>: > > > Hi Vimal, > > > > There's no limit on how many qualifiers a particular column family can > > have, nor should there be any performance degradation due to simply > having > > different numbers of qualifiers for different families (unless this leads > > to huge differences in row numbers between families). For more details, > > please take a look at http://hbase.apache.org/book/number.of.cfs.html > > > > Cheers, > > Dima > > > > On Sunday, June 15, 2014, Vimal Jain <[email protected]> wrote: > > > > > Hi, > > > I am planning to have one table with 3 column families(cf) ,having > around > > > 200,100,200 column qualifiers (cq) in each of them resp. > > > Whats the number of cq a cf can hold ? > > > Also having different numbers of cqs in family ( as in above 2 cfs have > > 200 > > > while the other one has 100 ) will have any impact on performance ? > > > > > > > > > -- > > > Thanks and Regards, > > > Vimal Jain > > > > > >
