Our experience of Cassandra+Hadoop is good. We have a 16 node Cassandra cluster storing 110m users plus a 5 node Hadoop cluster. We can scan through all rows in about 2.5 hours.
Dave On Thursday, 20 January 2011, David G. Boney <dbon...@semanticartifacts.com> wrote: > I don't think the below statement accurately describes data mining or using > Cassandra for data mining. All the techniques I am familiar with for either > data mining or machine learning, which data mining is a subset, make one or > more sequential scans through the data to abstract statistics or build > models. The question is how well does Cassandra perform with sequential scans > through the data? The Hadoop model works very well for many machine learning > problems because it is oriented toward sequential scans through the data. The > speed of the Hadoop interface to Cassandra would have a lot of bearing on the > application of Cassandra to data mining or machine learning problems. > > -------------Sincerely,David G. > Boneydboney1@semanticartifacts.comhttp://www.semanticartifacts.com > > > > > On Jan 20, 2011, at 6:35 AM, David Boxenhorn wrote: > Cassandra is not a good solution for data mining type problems, since it > doesn't have ad-hoc queries. Cassandra is designed to maximize throughput, > which is not usually a problem for data mining. > > On Thu, Jan 20, 2011 at 2:07 PM, Surender Singh <suriait2...@gmail.com> wrote: > > Hi All > > I want to use Apache Cassandra to store information (like first name, last > name, gender, address) about 2 million people. Then need to perform > analytic and reporting on that data. > is need to store information about 2 million people in Mysql and then > transfer that information into Cassandra.? > > Please help me as i m new to Apache Cassandra. > > if you have any use case like that, please share. > > Thanks and regards > > Surender Singh > > > > > -- *Dave Gardner* Technical Architect [image: imagini_58mmX15mm.png] [image: VisualDNA-Logo-small.png] *Imagini Europe Limited* 7 Moor Street, London W1D 5NB [image: phone_icon.png] +44 20 7734 7033 [image: skype_icon.png] daveg79 [image: emailIcon.png] dave.gard...@imagini.net [image: icon-web.png] http://www.visualdna.com Imagini Europe Limited, Company number 5565112 (England and Wales), Registered address: c/o Bird & Bird, 90 Fetter Lane, London, EC4A 1EQ, United Kingdom
