Re: OOM on heavy write load

(0) turn off swap (1) http://www.datastax.com/docs/0.7/troubleshooting/index#nodes-are-dying-with-oom-errors On Fri, Apr 22, 2011 at 8:00 AM, Nikolay Kоvshov nkovs...@yandex.ru wrote: I am using Cassandra 0.7.0 with following settings binary_memtable_throughput_in_mb: 64

Concern on HeartBeatState Generation

Hello, I found Gossipper is initiated with seconds from Unix Epoch (=System.currentTimeMillis() / 1000) for HeartBeatState Generation. Do we get same generation value at very quick restart? Are there any risk here? regards, maki

sstable2json

Hi, Is there a tool similar to sstable2json that can be used to convert data in commitlog to json? Or does sstable2json let us read the commitlog as well? Regards, smh.

Re: Cassandra 0.7.4 Bug?

I've had a related issue in the past: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Gossip-mysteries-0-7-4-on-EC2-td6217786.html No resolution so far. By restarting everything the problem went away. On Sun, Apr 17, 2011 at 3:23 PM, csharpplusproject csharpplusproj...@gmail.com

[RELEASE] Apache Cassandra 0.8.0 beta1

I am pleased to announce the release of Apache Cassandra 0.8.0 beta1. The 0.8 series is shaping up nicely and is packed with Awesome. For example, wouldn't it be great if you could perform major upgrades without bringing the entire cluster to a complete stop? Well, starting with 0.8, backward

Re: Can the Cassandra to be hosted, with all your features and performance, on Microsoft Azure ?

Do you have anything to report on this? We're considering a move to Azure, but Cassandra is the big unknown here. I guess we could spawn some VM role instances and snapshot them regularly, but if anyone's actually tried it, that would save us quite a bit of time. Thanks! On Wed, Mar 23, 2011 at

Jetty Configuration

Hello Team, I am currently load testing Jetty 7. The Box: Ubuntu Server 10.10 Intel Core 2 Duo E8400 3GHz 4GB Ram ASUS P2K motherboard 160GB HDD No Raid at the present. The application: Liftweb (scala) run on JVM 1.6, NGinx proxy/loadbalancer, Jetty 7, Memcached, PostgreSQL, Cassandra. I am

Re: sstable2json

No. On Fri, Apr 22, 2011 at 3:22 PM, Subrahmanya Harve subrahmanyaha...@gmail.com wrote: Hi, Is there a tool similar to sstable2json that can be used to convert data in commitlog to json? Or does sstable2json let us read the commitlog as well? Regards, smh. -- Jonathan Ellis Project

Re: multiple nodes sharing the same IP

You really need different IPs. 2011/4/22 Tomas Vondra t...@fuzzy.cz: Hi all, I have a very simple question - is it possible to operate multiple cassandra nodes on the same IP? I'm a complete newbie so I've been playing with a bunch of local nodes, struggling to build a ring. It took me a

Re: multiple nodes sharing the same IP

Dne 23.4.2011 03:08, Jonathan Ellis napsal(a): You really need different IPs. OK, thanks. Is there some reason for that? Because if you can't specify the port for the seeds (which seems like the reason why different IPs are needed), then you actually can't change the port at all. So the rpc port

Re: Concern on HeartBeatState Generation

Thanks! From iPhone On 2011/04/23, at 9:31, Jonathan Ellis jbel...@gmail.com wrote: No -- see SystemTable.incrementAndGetGeneration. On Fri, Apr 22, 2011 at 10:38 AM, Maki Watanabe watanabe.m...@gmail.com wrote: Hello, I found Gossipper is initiated with seconds from Unix Epoch

Re: Compacting single file forever

I think the really interesting part is how this node ended up in this state in the first place. There should be somewhere in the area of 340-500GB of data on it in when everything is 100% compacted. Problem now is that it used (we wiped it last night to test some 0.8 stuff) more then 1TB. To me,