Re: Size Tiered -> Leveled Compaction

2013-02-24 Thread Michael Theroux
Aaron, Thanks for the response. I think I speak for many Cassandra users when I say we greatly appreciate your help with our questions and issues. For the specific bug I mentioned, I found this comment : http://data.story.lu/2012/10/15/cassandra-1-1-6-has-been-released "Autom

Re: New CQL3 driver for Ruby

2013-02-24 Thread aaron morton
Thanks. I believe there is some effort towards creating a C lib for the native binary transport at apache con http://wiki.apache.org/apachecon/HackathonNA13 You could also ask on the developer list, someone will know. Cheers - Aaron Morton Freelance Cassandra Developer New Ze

Re: Does Cassandra JDBC driver support result set fetching?

2013-02-24 Thread aaron morton
The cassandra-jdbc driver here http://code.google.com/a/apache-extras.org/p/cassandra-jdbc/ uses the Thrift transport which does not support streaming results. The new (beta) native binary protocol supports partial results http://www.datastax.com/docs/1.2/cql_cli/cql_binary_protocol Cheers -

Re: How to read rows with composite keys in Hector?

2013-02-24 Thread aaron morton
For hector specific questions you may have bette luck at http://groups.google.com/group/hector-users Cheers - Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com On 25/02/2013, at 4:47 AM, Mateus Ferreira e Freitas wrote: > I stil

Re: Mutation dropped

2013-02-24 Thread aaron morton
> Aaron, what did u mean with RF3 CLQuorum is more a real world scenario? > If there are only 2 nodes, where will be placed the third replica? You would need a 3rd node. Running with less that RF 2 means you cannot have a strongly consistent system and fault tolerance. See http://thelastpickle.c

Re: disabling bloomfilter not working? or did I do this wrong?

2013-02-24 Thread aaron morton
Yeah, disabling completely is probably not great. There is some wriggle room between disabled and "less memory" Did I link to this bloom filter calculator ? http://hur.st/bloomfilter also https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/utils/BloomCalculations.java

Re: found bottleneck but can we do these steps?

2013-02-24 Thread aaron morton
> 1.When I restart the node, will gossip/thrift stay off ??? No. If you change it via node tool it will restart at start up. In pre 1.2 add these jvm startup params -Dcassandra.join_ring=false -Dcassandra.start_rpc=false > 2.H, is there any way to run upgradesstables when cassandra is not

Re: Size Tiered -> Leveled Compaction

2013-02-24 Thread aaron morton
If you did not use LCS until after the upgrade to 1.1.9 I think you are ok. If in doubt the steps here look like they helped https://issues.apache.org/jira/browse/CASSANDRA-4644?focusedCommentId=13456137&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13456137 Chee

Re: Data Model - Additional Column Families or one CF?

2013-02-24 Thread Adam Venturella
Thanks Aaron, this was a big help! — Sent from Mailbox for iPhone On Thu, Feb 21, 2013 at 9:27 AM, aaron morton wrote: > If you have a limited / known number (say < 30) of types, I would create a > CF for each of them. > If the number of types is unknown or very large I would have one CF with

New CQL3 driver for Ruby

2013-02-24 Thread Theo Hultberg
Hi, For the last few weeks I've been working on a CQL3 driver for Ruby. If you're using Ruby and Cassandra I would very much like your help getting it production ready. You can find the code and documentation here: https://github.com/iconara/cql-rb The driver supports the full CQL3 protocol exc