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From Todd Nine <t...@spidertracks.co.nz>
Subject Secondary indexing and 0.6/0.7 integration with Datanucleus
Date Tue, 15 Jun 2010 23:56:44 GMT
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


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