error casting Column to SuperColumn during compaction. ? CASSANDRA-1992 ?

2011-02-08 Thread Aaron Morton
I got the error below on an newish 0.7.0 cluster with the following...- no schema changes.- original RF at 1, changed to 3 via cassandra-cli and repair run- stable node membership, i.e. no nodes addedWas thinking it may have to do with CASSANDRA-1992

Different comparator types for column and supercolumn don't work

2011-01-14 Thread Karin Kirsch
Hello, I'm new to cassandra. I'm using cassandra release 0.7.0 (local, single node). I can't perform write operations in case the column and supercolumn families have different comparator types. For example if I use the code given in Issue: https://issues.apache.org/jira/browse/CASSANDRA-1712

Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-06 Thread Zhong Li
If I create 3-4 keyspaces, will this impact performance and resources (esp. memory and disk I/O) too much? Thanks, Zhong On Aug 5, 2010, at 4:52 PM, Benjamin Black wrote: On Thu, Aug 5, 2010 at 12:59 PM, Zhong Li z...@voxeo.com wrote: The big thing bother me is initial ring token. We

Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-06 Thread Benjamin Black
Additional keyspaces have very little overhead (unlike CFs). On Fri, Aug 6, 2010 at 9:42 AM, Zhong Li z...@voxeo.com wrote: If I create 3-4 keyspaces, will this impact performance and resources (esp. memory and disk I/O) too much? Thanks, Zhong On Aug 5, 2010, at 4:52 PM, Benjamin Black

set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-05 Thread Zhong Li
All, Thanks for Apache Cassandra Project, it is great project. This is my first time to use it. We install it on 10 nodes and runs great. The 10 nodes cross all 5 datacenters around the world. The big thing bother me is initial ring token. We have some Column Families. It is very hard to

Re: set ReplicationFactor and Token at Column Family/SuperColumn level.

2010-08-05 Thread Gary Dusbabek
On Thu, Aug 5, 2010 at 14:59, Zhong Li z...@voxeo.com wrote: All, Thanks for Apache Cassandra Project, it is great project. This is my first time to use it. We install it on 10 nodes and runs great. The 10 nodes cross all 5 datacenters around the world. The big thing bother me is initial

Re: Column or SuperColumn

2010-06-04 Thread Jonathan Ellis
if you have a relatively small, static set of subcolumns, that you read as a group, then using supercolumns is reasonable On Tue, Jun 1, 2010 at 7:33 PM, Peter Hsu pe...@motivecast.com wrote: I have a pretty simple data modeling question.  I don't know whether or not to use a CF or SCF in one