Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-19 Thread Alain RODRIGUEZ
Hi, I am not sure I understood your message correctly but I will try to answer it. but, I think, in Cassandra case, it seems a matter of how much data we use > with how much memory we have. If you are saying you can use poor commodity servers (vertically scale poorly) and just add nodes (horizon

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-11 Thread Hiroyuki Yamada
Thank you all to respond and discuss my question. I agree with you all basically, but, I think, in Cassandra case, it seems a matter of how much data we use with how much memory we have. As Jack's (and datastax's) suggestion, I also used 4GM RAM machine (t2.medium) with 1 billion records (about 1

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-10 Thread Robert Coli
On Thu, Mar 10, 2016 at 3:27 AM, Alain RODRIGUEZ wrote: > So, like Jack, I globally really not recommend it unless you know what you > are doing and don't care about facing those issues. > Certainly a spectrum of views here, but everyone (including OP) seems to agree with the above. :D =Rob

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-10 Thread Alain RODRIGUEZ
+1 for Rob comment. I would add that I have been learning a lot from running t1.micro (then small, medium, Large, ..., i2.2XL) on AWS machines (800 MB RAM). I had to tweak every single parameter in cassandra.yaml and cassandra-env.sh. So I leaned a lot about internals, I had to! Even if I am glad

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-09 Thread Jack Krupansky
Thanks, Rob, but... I'll continue to do my best to strongly (vehemently, or is there an even stronger word for me to use?!) discourage use of Cassandra in under 4/8 GB of memory. Hey, I just want people to be happy, and trying to run Cassandra in under 8 GB (or 4 GB for dev) is just... asking for t

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-07 Thread Ben Bromhead
+1 for http://opensourceconnections.com/blog/2013/08/31/building- the-perfect-cassandra-test-environment/ We also run Cassandra on t2.mediums for our Developer clusters. You can force Cassandra to

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-07 Thread Robert Coli
On Fri, Mar 4, 2016 at 8:27 PM, Jack Krupansky wrote: > Please review the minimum hardware requirements as clearly documented: > > http://docs.datastax.com/en/cassandra/3.x/cassandra/planning/planPlanningHardware.html > That is a document for Datastax Cassandra, not Apache Cassandra. It's wonder

Re: How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-04 Thread Jack Krupansky
Please review the minimum hardware requirements as clearly documented: http://docs.datastax.com/en/cassandra/3.x/cassandra/planning/planPlanningHardware.html Please adjust your hardware usage to at least meet the clearly documented minimum requirements. If you continue to encounter problems once y

How can I make Cassandra stable in a 2GB RAM node environment ?

2016-03-04 Thread Hiroyuki Yamada
Hi, I'm working on some POCs for Cassandra with single 2GB RAM node environment and some issues came up with me, so let me ask here. I have tried to insert about 200 million records (about 11GB in size) to the node, and the insertion from an application program seems completed, but something (pro