cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From aaron morton <>
Subject Re: get_indexed_slices ~ simple map-reduce
Date Sun, 12 Jun 2011 19:25:07 GMT
Not exactly sure what you mean here, all data access is through the thrift API unless you code
java and embed cassandra in your app. 

As well as Pig support there is also Hive support in brisk (which will also have Pig support

Can you provide some more info on the use case ? Personally if you have a read query you know
you need to support, I would consider supporting it in the data model without secondary indexes.

Aaron Morton
Freelance Cassandra Developer

On 11 Jun 2011, at 19:23, Michal August├Żn wrote:

> Hi all,
> I'm thinking of get_indexed_slices function as a simple map-reduce job
> (that just maps) - am I right?
> Well, I would like to be able to run simple queries on values but I
> don't want to install Hadoop, write map-reduce jobs in Java (the whole
> application is in C# and I don't want to introduce new development
> stack - maybe Pig would help) and have some second interface to
> Cassandra (in addition to Thrift). So secondary indexes seem to be
> rescue for me. I would have just one indexed column that will have
> day-timestamp value (~100k items per day) and the equality expression
> for this column would be in each query (and I would add more ad-hoc
> expressions).
> Will this scenario work or is there some issue I could run in?
> Thanks!
> Augi

View raw message