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From: Jonathan Ellis <jbellis@gmail.com>
Date: Tue, 15 Jun 2010 23:38:36 -0500
Message-ID: <AANLkTikwUayW0LFeg6Rf6REsE1sTHz1armhrmc5E1AbH@mail.gmail.com>
Subject: Re: Secondary indexing and 0.6/0.7 integration with Datanucleus
To: dev@cassandra.apache.org
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No chance that 749 can be backported to 0.6, sorry.

On Tue, Jun 15, 2010 at 10:35 PM, Todd Nine <todd@spidertracks.co.nz> wrote:

>  Lets try that again.....
>
> This is the intended issue.
>
> https://issues.apache.org/jira/browse/CASSANDRA-749
>
> thanks,
> Todd
>
>
>
>   On Tue, 2010-06-15 at 20:02 -0500, Jonathan Ellis wrote:
>
> What issue were you trying to link? :)
>
> On Tue, Jun 15, 2010 at 6:56 PM, Todd Nine <todd@spidertracks.co.nz> wrote:
> > Hi all,
> >  I'm implementing a Datanucleus plugin for Cassandra.  I'm finished
> > with the basic functionality, and everything seems to work pretty well.
> > Now my issue is performing secondary indexing on fields within my data.
> > I have outlined some of the issues I'm facing in this post.
> >
> > http://www.datanucleus.org/servlet/forum/viewthread_thread,6087_lastpage,yes#32610
> >
> > Essentially, for each operand the user specifies, I will need to make a
> > trip to Cassandra, load the key columns, then perform an intersection
> > with the result from my previous read.  Eventually at the end of all the
> > intersections, I will have a list of keys I will then load.  This
> > obviously requires several trips to Cassandra, where from my
> > understanding of secondary indexing, I would only need to make one trip
> > for multiple operands over a column family.    I've read over this
> > issue.
> >
> > http://issues.apache.org/jira/browse/CASSANDRA-32610
> >
> > And it seems to solve a lot of my woes.  Is it possible/recommended to
> > patch the current code base of 0.6.2 to perform this functionality?
> >
> > Thanks,
> > Todd
> >
> >
>
>
>
>
>


-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

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