Configure multi data center

2010-11-23 Thread hai
Hi all, I successfully config cassandra cluster. Now I'm trying to config multi data center. My purpose is to create an app which is working 24/7 with some data centers. The data between centers are synchronized and the app is still able to work normally even some of data centers are down.

monitoring read and write problems via log file?

2010-11-23 Thread Robert
I was told by a colleague that read and write problems in Cassandra can be detected by monitoring a Cassandra log file. A few questions: 1) Is this right? Can read and write problems be detected this way? 2) If they can be detected, what is/are the right log file(s) to look at? 3) Is there a t

Re: Cassandra memtable and GC

2010-11-23 Thread Peter Schuller
> I've tested again with recording LiveSSTableCount and MemtableDataSize > via jmx. I guess this result supports my suspect on memtable > performance because I cannot find Full GC this time. > This is a result in smaller data size (160million records on > cassandra) on different disk configuration

cassandra-cli multiline commands?

2010-11-23 Thread Dan Washusen
I notice CASSANDRA-1742 mentions support for commands that span multiple lines in cassandra-cli. Did it make it in? If so what's the syntax? Cheers, Dan

[no subject]

2010-11-23 Thread Amin Sakka, Novapost
-- Amin SAKKA Research and Development Engineer 32 rue de Paradis, 75010 Paris *Tel:* +33 (0)6 34 14 19 25 *Mail:* amin.sa...@novapost.fr *Web:* www.novapost.fr / www.novapost-rh.fr