Re: Performance problem with large wide row inserts using CQL

2014-02-24 Thread Rüdiger Klaehn
On Mon, Feb 24, 2014 at 11:47 AM, Sylvain Lebresne sylv...@datastax.comwrote: I still have some questions regarding the mapping. Please bear with me if these are stupid questions. I am quite new to Cassandra. The basic cassandra data model for a keyspace is something like this, right?

Re: Performance problem with large wide row inserts using CQL

2014-02-22 Thread Rüdiger Klaehn
On Fri, Feb 21, 2014 at 11:51 AM, Sylvain Lebresne sylv...@datastax.comwrote: On Thu, Feb 20, 2014 at 10:49 PM, Rüdiger Klaehn rkla...@gmail.comwrote: Hi Sylvain, I applied the patch to the cassandra-2.0 branch (this required some manual work since I could not figure out which commit

Re: Performance problem with large wide row inserts using CQL

2014-02-20 Thread Rüdiger Klaehn
? kind regards and many thanks for your help, Rüdiger On Thu, Feb 20, 2014 at 8:36 AM, Sylvain Lebresne sylv...@datastax.comwrote: On Wed, Feb 19, 2014 at 9:38 PM, Rüdiger Klaehn rkla...@gmail.com wrote: I have cloned the cassandra repo, applied the patch, and built it. But when I want

Performance problem with large wide row inserts using CQL

2014-02-19 Thread Rüdiger Klaehn
Hi all, I am evaluating Cassandra for satellite telemetry storage and analysis. I set up a little three node cluster on my local development machine and wrote a few simple test programs. My use case requires storing incoming telemetry updates in the database at the same rate as they are coming

Re: Performance problem with large wide row inserts using CQL

2014-02-19 Thread Rüdiger Klaehn
: On Wed, Feb 19, 2014 at 11:27 AM, Rüdiger Klaehn rkla...@gmail.comwrote: Am I doing something wrong, or is this a fundamental limitation of CQL. Neither. I believe you are running into https://issues.apache.org/jira/browse/CASSANDRA-6737, which is a bug, a performance bug, which we should

Re: Performance problem with large wide row inserts using CQL

2014-02-19 Thread Rüdiger Klaehn
On Wed, Feb 19, 2014 at 7:49 PM, Sylvain Lebresne sylv...@datastax.comwrote: On Wed, Feb 19, 2014 at 11:27 AM, Rüdiger Klaehn rkla...@gmail.comwrote: Am I doing something wrong, or is this a fundamental limitation of CQL. Neither. I believe you are running into https://issues.apache.org

Re: Performance problem with large wide row inserts using CQL

2014-02-19 Thread Rüdiger Klaehn
:119) at com.netflix.astyanax.thrift.AbstractOperationImpl.execute(AbstractOperationImpl.java:56) ... 10 more On Wed, Feb 19, 2014 at 12:38 PM, Rüdiger Klaehn rkla...@gmail.comwrote: On Wed, Feb 19, 2014 at 7:49 PM, Sylvain Lebresne sylv...@datastax.comwrote: On Wed, Feb