build failure with cassandra 2.0.12

2015-02-23 Thread Cheng Ren
Hi, I am experiencing build failure with cassandra 2.0.12. I downloaded source from http://cassandra.apache.org/download/, did ant mvn-install and got following error: [artifact:dependencies] -- [artifact:dependencies] 1 required artifact is missing. [artifact:dependencies] [artifact:depen

Re: nodetool status shows large numbers of up nodes are down

2015-02-10 Thread Cheng Ren
> rolo@pythian | Twitter: cjrolo | Linkedin: *linkedin.com/in/carlosjuzarterolo > <http://linkedin.com/in/carlosjuzarterolo>* > Tel: 1649 > www.pythian.com > > On Tue, Feb 10, 2015 at 3:40 AM, Cheng Ren > wrote: > >> Hi, >> We have a two-dc cluster with 21 n

nodetool status shows large numbers of up nodes are down

2015-02-09 Thread Cheng Ren
Hi, We have a two-dc cluster with 21 nodes and 27 nodes in each DC. Over the past few months, we have seen nodetool status marks 4-8 nodes down while they are actually functioning. Particularly today we noticed that running nodetool status on some nodes shows higher number of nodes are down than be

Re: Reasonable range for the max number of tables?

2014-08-18 Thread Cheng Ren
We use Cassandra for multi-tenant application. Each tenant has own set of tables and we have 1592 tables in total in our production Cassandra cluster. It's running well and doesn't have any memory consumption issue, but the challenge confronting us is the schema change problem.We have such a large