Ok..but what if I have 2 multivalue dimensions on which I have to analyse no of users. Say Category can have 50 values and another dimension is country of user(say 100+ values). I need weekly count on category and country + I need overall distinct user count on category and country.
How to achieve this in Hbase. On Mon, May 19, 2014 at 3:11 PM, Michael Segel <michael_se...@hotmail.com>wrote: > The point is that choosing a field that has a small finite set of values > is not a good candidate for indexing using an inverted table or b-tree etc … > > I’d say that you’re actually going to be better off using a scan with a > start and stop row, then doing the counts on the client side. > > So as you get back your result set… you process the data. (Either in a M/R > job or single client thread.) > > HTH > > On May 19, 2014, at 8:48 AM, Shushant Arora <shushantaror...@gmail.com> > wrote: > > > I cannot apply server side filter. > > 2nd requirement is not just get users with supreme category rather > > distribution of users category wise. > > > > 1.How many of supreme , how many of normal and how many of medium till > date. > > > > > > On Mon, May 19, 2014 at 12:58 PM, Michael Segel > > <michael_se...@hotmail.com>wrote: > > > >> Whoa! > >> > >> BAD BOY. This isn’t a good idea for secondary index. > >> > >> You have a row key (primary index) which is time. > >> The secondary is a filter… with 3 choices. > >> > >> HINT: Do you really want a secondary index based on a field that only > has > >> 3 choices for a value? > >> > >> What are they teaching in school these days? > >> > >> How about applying a server side filter? ;-) > >> > >> > >> > >> On May 18, 2014, at 12:33 PM, John Hancock <jhancock1...@gmail.com> > wrote: > >> > >>> Shushant, > >>> > >>> Here's one idea, there might be better ways. > >>> > >>> Take a look at phoenix it supports secondary indexing: > >>> http://phoenix.incubator.apache.org/secondary_indexing.html > >>> > >>> -John > >>> > >>> > >>> On Sat, May 17, 2014 at 8:34 AM, Shushant Arora > >>> <shushantaror...@gmail.com>wrote: > >>> > >>>> Hi > >>>> > >>>> I have a requirement to query my data base on date and user category. > >>>> User category can be Supreme,Normal,Medium. > >>>> > >>>> I want to query how many new users are there in my table from date > range > >>>> (2014-01-01) to (2014-05-16) category wise. > >>>> > >>>> Another requirement is to query how many users of Supreme category are > >>>> there in my table Broken down wise month in which they came. > >>>> > >>>> What should be my key > >>>> 1.If i take key as combination of date#category. I cannot query based > on > >>>> category? > >>>> 2.If I take key as category#date I cannot query based on date. > >>>> > >>>> > >>>> Thanks > >>>> Shushant. > >>>> > >> > >> > >
