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From alta...@ceid.upatras.gr
Subject Re: How do secondary indices work
Date Wed, 09 Feb 2011 10:35:03 GMT
Thank you for the links, I did read a bit in the comments of the ticket,
but I couldn't get much out of it.

I am mainly interested in how the index is stored and partitioned, not how
it is used. I think the people in the dev list will probably be better
qualified to answer that. My questions always seem to get moved to the
user list, and usually with good cause, but I think this time it should be
in the dev list :) Please move it back, if you can.

Alexander

> AFAIK this was the ticket the original work was done under 
> https://issues.apache.org/jira/browse/CASSANDRA-1415
>
> also  http://www.datastax.com/docs/0.7/data_model/secondary_indexes
> and  http://pycassa.githubcom/pycassa/tutorial.html#indexes may help
>
> (sorry on reflection the email prob did not need to be moved from dev, my
> bad)
> Aaron
>
> On 09 Feb, 2011,at 09:16 AM, Aaron Morton <aaron@thelastpickle.com> wrote:
>
> Moving to the user group.
>
>
>
> On 08 Feb, 2011,at 11:39 PM, altanis@ceid.upatras.gr wrote:
>
> Hello,
>
> I'd like some information about how secondary indices work under the hood.
>
> 1) Is data stored in some external data structure, or is it stored in an
> actual Cassandra table, as columns within column families?
> 2) Is data stored sorted or not? How is it partitioned?
> 3) How can I access index data?
>
> Thanks in a advance,
>
> Alexander Altanis
>

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