Ok I was wondering if 2.0.9 install reuses the old tables. I am also wondering if Cassandra 2.0.9 is installed without any other Cassandra install present if the installed Cassandra will work. I always reload everything by scripts so I did that but wondering if I need to do what I mentioned above and not have any Cassandra present when I do an install.
In regards to usage of Cassandra I am taking a 2 step approach. One just try with one or two tables and get that to work then denormalize and test. I have avoided doing anything bigger till I get a version 2.0.x that seems stable. I usually wait 6 months till I upgrade but have waited longer for 2.0.x since it I treated it as a major change. I have maybe 100 tables in SQL Server and 2 in Cassandra right now to see how stable it is and measure performance against SQL Server. I am planning to move completely to Cassandra after 2.0.x has been out awhile and 2.1 when it was 2.1.2 but sounds like should wait til 2.1.6. So thanks for the help. -Tony On , Tony Anecito <adanec...@yahoo.com> wrote: Thanks for the suggestions. I am planning to wait till 2.1 is released and for one or two minor releases that is why I have been on 1.2.5. When I installed 2.0.9 I created everything via java scripts so as to avoid any issues and it does not use anything from the older one. Does Cassandra install do something with an older version I should be aware of? I will look at your link. -Tony On Wednesday, August 20, 2014 4:10 PM, Robert Coli <rc...@eventbrite.com> wrote: On Wed, Aug 20, 2014 at 1:44 PM, Tony Anecito <adanec...@yahoo.com> wrote: When will Cassandra 2.1 be released as GA? > > > >Will there be a datastax CQL driver available then? > > >Will Cassandra 2.1 and Datastax CQL driver support nested selects? If not for >a combination key table and detailed table (Star Schema) what is the fastest >way to query without using heavy de-normalization? The form of your questions suggests you are planning to use a not-ready-for production version of Cassandra inappropriately. Probably don't do that. https://engineering.eventbrite.com/what-version-of-cassandra-should-i-run/ In general the answer to complex query questions in Cassandra is "heavy de-normalization", if you have a problem that you need to solve without "heavy de-normalization" then perhaps Cassandra is not for you. =Rob
