Question: cassandra ring

2015-07-18 Thread Thouraya TH
Hi all, I'm trying to set up this environnement: i have two hosts A and B and 6 vms: On Host 'A', i have three guests : x, y and z On Host 'B' i have three guests : e, f and g I have launched cassandra on all guests (seed node: x) Now i'd like to start cassandra on the two Hosts A and B. (seed

Re: Unbalanced disk load

2015-07-18 Thread J. Ryan Earl
Even with https://issues.apache.org/jira/browse/CASSANDRA-7386 data balancing across JBOD setups is pretty horrible. Having used JBOD for about 2 years from 1.2.x and up, it is my opinion JBOD on Cassandra is nascent at best and far from mature. For a variety of reasons, JBOD should perform bette

Re: Significant drop in storage load after 2.1.6->2.1.8 upgrade

2015-07-18 Thread Nate McCall
Perhaps https://issues.apache.org/jira/browse/CASSANDRA-9592 got compactions moving forward for you? This would explain the drop. However, the discussion on https://issues.apache.org/jira/browse/CASSANDRA-9683 seems to be similar to what you saw and that is currently being investigated. On Fri, J

Re: Unbalanced disk load

2015-07-18 Thread Nate McCall
> > I am currently benchmarking Cassandra with three machines, and on each machine I am seeing an unbalanced distribution of data among the data directories (1 per disk). > I am concerned that this affects my write performance, is there anything that I can make the distribution be more even? Would