Re: Replacing supercolumns with composite columns; Getting the equivalent of retrieving a list of supercolumns by name

Tuesday, January 03, 2012 3:12 PM > To: user@cassandra.apache.org > Cc: Asil Klin > Subject: Re: Replacing supercolumns with composite columns; Getting the > equivalent of retrieving a list of supercolumns by name > > The main issue with replacing super columns with composite columns right

Replacing supercolumns with composite columns; Getting the equivalent of retrieving a list of supercolumns by name

I have a super columns family which I always use to retrieve a list of supercolumns(with all subcolumns) by name. I am looking forward to replace all SuperColumns in my schema with the composite columns. How could I design schema so that I could do the equivalent of retrieving a list of supercolum

Merging 3 rows that are mostly read together from CF into single rows with composite col names ?

If 3 rows in a column family need to be read together 'always', is it preferable to just merge them in 1 row using composite col names(instead of keeping in 3 rows) ? Does this improve read performance, anyway ?

Composite columns vs Protocol Buffers when all you need is to pack many things in a single column

I know Composite columns are used for some very useful scenarios(like to replace super columns) which cannot be helped with anything else. But, for situations when you just need to pack many things in a single column efficiently and such that the retrievals are also performant, which one should be

Re: Finding the intersection results of column sets of two rows

I think my question might have been unclear to some of you. So I would again explain my problem(& solution which I thought of) for the sake of clarity:- Consider I have 2 rows. 1st row contains 60-70 columns and 2nd row contains like in hundreds of thousands columns. Both the columns sets are al

A few quick questions to help me design a better schema..

related to a particular row key be kept together in a single column family ? 5. ) Are there any limitation of valueless column to consider. I read in a ppt "Only works with <= 2B columns in 0.7 valueless colum". I could understand the meaning of this statement. Thanks Asil

For what parts of a social network is Cassandra a good fit ?

For what parts of a social network is Cassandra a good fit ? Is it recommendable to throw all social network data into Cassandra datastore specifically, what about the data for newsfeed generation from user's network updates ?

Re: WELCOME to user@cassandra.apache.org

stolen >> goods. >> - >> Sincerely, >> David G. Boney >> dbon...@semanticartifacts.com >> http://www.semanticartifacts.com >> >> >> >> >> On Dec 29, 2010, at 10:51 PM, asil klin wrote: >> >> Can't I get

Re: WELCOME to user@cassandra.apache.org

Can't I get it for free from anywhere? I am a student researching on Cassandra datastore and have no economically profitable reasons to buy? If anyone of you could pass me a copy to my email address:* asdk...@gmail.com* Thanks so much ! Asil On Thu, Dec 30, 2010 at 10:10 AM, Germán Ko

Re: WELCOME to user@cassandra.apache.org

Can anyone pass me a pdf copy of Cassandra The Definitive Guide ? Thanks. Asil