Re: Cassandra Data Model

[Lance Norskog <go...@gmail.com>]

To put it another way, what you want is a simple Hadoop/Cassandra
connector. There is not one in the Mahout project.

Search google for Hadoop+Cassandra and you'll get a lot of hits about
combining them.

On Wed, Feb 29, 2012 at 7:40 AM, Sean Owen <sr...@gmail.com> wrote:
> Half of the recommended code has nothing to do with Hadoop.
> CassandraDataModel is relevant only there.
>
> I'm saying that for anything else that does use Hadoop there is no such
> thing as Mahout support for Cassandra because Hadoop is the piece that
> interfaces with it.
> On Feb 29, 2012 3:38 PM, "Srinivas Krishnan" <sh...@gmail.com>
> wrote:
>
>> Could you clarify, what is for non distributed recommenders ? Is the
>> Cassandra mapping to support Hadoop and hence only for recommenders that
>> use map reduce or any of the algorithms that use map reduce can be used by
>> mapping the data in Cassandra to Hadoop.
>>
>> -srinivas
>>
>>
>>
>>
>> On Wed, Feb 29, 2012 at 10:30 AM, Sean Owen <sr...@gmail.com> wrote:
>>
>> > That is for non distributed recomenders, not using Hadoop. For anything
>> > else using Hadoop you use Cassandra by using it as an input to Hadoop. It
>> > is not specific to Mahout.
>> > On Feb 29, 2012 3:23 PM, "Srinivas Krishnan" <sh...@gmail.com>
>> > wrote:
>> >
>> > > We have a large collection of "domain names" that we are moving from a
>> > > MySQL DB to Cassandra for analytics. We want to run some n-gram tagging
>> > > models that we have developed for this purpose and would like to do it
>> at
>> > > scale.
>> > >
>> > > The question I really have is how does Mahout map on to Cassandra, I
>> see
>> > > that .6 release states support for Cassandra Data model, which I am
>> > > guessing is support for mapping on to Columns, SuperColumns etc or am I
>> > > mistaken ?
>> > >
>> > >
>> > > -srinivas
>> > >
>> > >
>> > >
>> > > On Wed, Feb 29, 2012 at 9:23 AM, Sean Owen <sr...@gmail.com> wrote:
>> > >
>> > > > CassandraDataModel is not related to HMM. Maybe you could be more
>> > > specific
>> > > > here.
>> > > > On Feb 29, 2012 4:43 AM, "Srinivas Krishnan" <
>> shrin.krishnan@gmail.com
>> > >
>> > > > wrote:
>> > > >
>> > > > > I am currently designing my Data Model for a small cassandra
>> cluster
>> > > and
>> > > > > wanted to incorporate the HMM model from Mahout. I could not find
>> > much
>> > > > > documentation of how exactly Mahout maps to an existing Data Model
>> in
>> > > > > Cassandra. Any specific things to keep in mind or pointer would be
>> > > great.
>> > > > >
>> > > > > -srinivas
>> > > > >
>> > > >
>> > >
>> >
>>



-- 
Lance Norskog
goksron@gmail.com