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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Secondary Index Storage
Date Fri, 23 Aug 2013 04:07:03 GMT
You can already symlink the index directory anywhere you like.  I'm not
convinced that special-casing indexes is a good approach in general vs
looking at performance of all tables.


On Thu, Aug 22, 2013 at 8:16 PM, Nipuni Piyabasi Perera <
nipuni880917@gmail.com> wrote:

> Hi,
>
> I need to do a secondary index access improvement with a little
> modification to Cassandra. I could see in [1], that the performance of
> secondary index querying can be increased via splitting the column family
> data and secondary index data.
> Currently Cassandra saves keyspace data and secondary indices data in
> "var/lib/cassandra/data/".
> According to my understanding the data saves in the "data_file_directories"
> location of conf/cassandra.yaml file. If I can enter new variable into
> "cassandra.yaml" file and address it in the place where Cassandra stores
> secondary indexes, this can be fixed.
>
> Can anyone give some guidance regarding this improvement.
>
> [1] https://issues.apache.org/jira/browse/CASSANDRA-5502
>
> Thanks,
> Nipuni
>
> --
> Nipuni Piyabasi Perera
> Undergraduate
> Department of Computer Science And Engineering
> University of Moratuwa
> Sri Lanka
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder, http://www.datastax.com
@spyced

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