Solr can use a dynamic schema… https://github.com/apache/lucene-solr/blob/trunk/solr/example/solr/conf/schema.xml#L538
But you may still want to define a schema so you can adjust the index and query time processing/typing of the field values. Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 20/10/2011, at 2:20 AM, Brian O'Neill wrote: > Anthony, > > We're in exactly the same boat. We are waiting on DataStax Enterprise to see > if it can ease the pain of SOLR schemas. > > In the meantime, I just submitted a native REST layer for Cassandra. > https://issues.apache.org/jira/browse/CASSANDRA-3380 > (Hopefully, it will get integrated soon. Vote it up ;) > > With a simple REST layer, I'm making the case that we can use Cassandra just > like CouchDB. (so we don't have to deploy both) > Extending that assertion, I think I could enhance the REST layer to provide a > stream of changes just like CouchDB does. Elastic Search could tap into that > stream as a river. Just like this… > http://www.elasticsearch.org/guide/reference/river/couchdb.html > > That combination would be pretty powerful. If we can't get that setup, we > may fallback to an AOPish strategy as well. > > Definitely let me know where you end up. I'll share our findings as well. > > cheers, > -brian > > ---- > Brian O'Neill > Lead Architect, Software Development > Health Market Science | 2700 Horizon Drive | King of Prussia, PA 19406 > p: 215.588.6024 > blog: http://weblogs.java.net/blog/boneill42/ > blog: http://brianoneill.blogspot.com/ > > > > From: Anthony Ikeda <anthony.ikeda....@gmail.com> > Reply-To: <user@cassandra.apache.org> > Date: Tue, 18 Oct 2011 14:18:17 -0700 > To: <user@cassandra.apache.org> > Subject: Re: Using elasticsearch on cassandra nodes > > At the moment we are only prototyping so we haven't bridged the two at all. > We had planned on creating a write-through operation that allowed us to > filter the calls (AOP perhaps?) to manage the indexing as we stored it in > Cassandra. > > We are still trying to work out if we go the elastic search route or not as > DataStax will be releasing DataStax Enterprise 2.0 early next year with Solr > built in and as you said the index schemas seem to be difficult to deal with > - I really don't want to have to configure Solr, the no schema approach > sounds much faster to get up and running. > > Anthony > > > On Tue, Oct 18, 2011 at 6:14 AM, Brian O'Neill <b...@alumni.brown.edu> wrote: >> Anthony, >> >> We've been looking at elastic search as well. Presently we have SOLR in >> place, but it is cumbersome dealing with SOLR schemas when indexing >> information out of Cassandra (since you can't anticipate all the columns >> ahead of time). >> >> What are you using as your bridge between Cassandra and ES? Are you >> developing a Cassandra river? >> >> -brian >> >> >> >> >> On Mon, Oct 17, 2011 at 5:29 PM, Anthony Ikeda <anthony.ikeda....@gmail.com> >> wrote: >>> I've already posted to the elasticsearch groups and thought it prudent to >>> also ask here. >>> >>> We are looking at using elastic search to index our data that we currently >>> store to Cassandra. I was wondering if there are any concerns running >>> elastic search on the same nodes that we use for Cassandra? We have a ring >>> of 6 nodes (2 DCs each with 3 nodes) I was thinking of installing elastic >>> search on 2 nodes in each datacentre - maybe all three. The only reason I'd >>> use the same infrastructure would be because we have the distributed >>> visibility already in place. >>> >>> Has anyone else taken this approach? Pros? Cons? >>> >>> Anthony >>> >> >> >> >> -- >> Brian ONeill >> Lead Architect, Health Market Science (http://healthmarketscience.com) >> mobile:215.588.6024 >> blog: http://weblogs.java.net/blog/boneill42/ >> blog: http://brianoneill.blogspot.com/ >> >
