Re: cassandra most stable version ?

2011-12-08 Thread Attila Babo
0.6.12, we had serious problem with 0.7.x and 0.8.x

Re: Too many open files during Repair operation

2011-07-19 Thread Attila Babo
If you are using Linux, especially Ubuntu, check the linked document below. This is my favorite: "Using sudo has side effects in terms of open file limits. On Ubuntu they’ll be reset to 1024, no matter what’s set in /etc/security/limits.conf" http://wiki.basho.com/Open-Files-Limit.html /Attila

Re: Exceptions on 0.7.0

2011-02-10 Thread Attila Babo
The same problem here, even with apache-cassandra-2011-02-10_06-30-00-bin.tar.gz from hudson. I'm happy to share the full log if needed or run tests to identify the core problem which looks like an overflow for me. Database was upgraded from 0.6.8, there were no problems with it before. /Attila -

Re: What is the most solid version of Cassandra? No secondary indexes needed.

2011-02-15 Thread Attila Babo
0.6.8 is stable and production ready, the later versions of the 0.6 branch has "issues". No offense, but the 0.7 branch is fairly unstable from my experience. I have reproduced all the open bugs with a production dataset, even when tried to rebuild it from scratch after a complete loss. If you hav

Re: Coordinator node

2011-02-15 Thread Attila Babo
We are using haproxy in TCP mode for round-robin with great succes. It's bit unorthodox but has same real added values like logging. Here is the relavant config for haproxy: # global log 127.0.0.1 local0 log 127.0.0.1 local1 notice maxconn 4096 user haproxy group haproxy

Re: Coordinator node

2011-02-15 Thread Attila Babo
There is a single point of failure for sure as there is a single proxy in front but that pays off as the load is even between nodes. Another plus is when a machine is out of the cluster for maintenance the proxy handles that automatically. Originally I started it as an experiment, there is a large