Re: lots of small nodes vs fewer big nodes

I advise you to have 7GB RAM better (more would be better if you have a lot of data per node). But the real difference is made when you use SSDs or RAIDs of SSDs, since the bottleneck is the disk throughput in most cases. We are in the cloud, we tried a lot of configurations and were comfortable

RE: lots of small nodes vs fewer big nodes

I found using a JBOD SSD setup (one per data directory) to be faster than RAID. JBOD configuration will also allow a disk to fail and the remaining disks to continue serving reads if you set disk_failure_policy: best_effort. If you do go for a RAID controller watch out for any special

JmxReporter.java (line 388) Error processing

Hi, I am new to Cassandra. I tried cassandra -f but i am getting the JmxReporter.java (line 388) Error processing errors. I downloaded binary version of apache-cassandra-1.2.8 which runs on Ubuntu 11.04 VM Virtual Box. I added jna.jar file to the library file too. Thanks for your help. Massoud

Re: JmxReporter.java (line 388) Error processing

On Thu, Aug 8, 2013 at 9:35 AM, kohanm kohan.mass...@gmail.com wrote: I tried cassandra -f but i am getting the JmxReporter.java (line 388) Error processing errors. ERROR [main] 2013-08-08 07:30:53,717 CassandraDaemon.java (line 176) Your JVM is out of date. Please upgrade to the newest

[RELEASE] Apache Cassandra 2.0.0 RC 1

The Cassandra team is pleased to announce the first release candidate for Apache Cassandra 2.0.0. As a release candidate, we're working to establish that this is relatively free of obvious bugs before calling it Done. Bottom line, if you aren't willing to test pre-production software and report

Re: [RELEASE] Apache Cassandra 2.0.0 RC 1

Is the plan to close the 1.x generation on 1.2.* branch and move to 2.0 or will 1.2 continue to 1.3, 1.4, etc while 2.0 also progresses? On Thu, Aug 8, 2013 at 1:44 PM, Eric Evans eev...@sym-link.com wrote: The Cassandra team is pleased to announce the first release candidate for Apache

Cassandra nodetool repair question

Afternoon, We are noticing nodetool repair processes are not completing after a weeks worth of time, and have resulted in some Cassandra nodes having more than one process running do to cron scheduled. We are also chasing some performance degradation after upgrading all nodes to version 1.2.8

Re: JmxReporter.java (line 388) Error processing

Thanks Rob. Now I am getting listen_address in cassandra.yaml errors I mentioned before the Cassandra runs on VM VitualBox on windows 7 machine. On the ERROR text I changed the real ip address to MymachineIP. What should I put on the* listen_address:* in *cassandra.yaml* file? Thanks. short

Re: [RELEASE] Apache Cassandra 2.0.0 RC 1

[ David Ward ] Is the plan to close the 1.x generation on 1.2.* branch and move to 2.0 or will 1.2 continue to 1.3, 1.4, etc while 2.0 also progresses? The 1.2 branch will be continue to be maintained for sometime, but there will be no new releases = 1.3 and 2.0. On Thu, Aug 8, 2013 at

Re: JmxReporter.java (line 388) Error processing

What does ifconfig say? use eth0 or eth1's IP or whatever is static. And on that note, setup a static IP ( versus dhcp based ) it will make stopping/starting easier. On Thu, Aug 8, 2013 at 2:01 PM, kohanm kohan.mass...@gmail.com wrote: Thanks Rob. Now I am getting listen_address in

Re: [RELEASE] Apache Cassandra 2.0.0 RC 1

Congradulations on all your hard work!   Can 1.2.5 run alongside of 2.0.0 RC 1?   Thanks, -Tony From: Eric Evans eev...@sym-link.com To: user@cassandra.apache.org Sent: Thursday, August 8, 2013 1:44 PM Subject: [RELEASE] Apache Cassandra 2.0.0 RC 1 The Cassandra team is pleased to announce

Re: JmxReporter.java (line 388) Error processing

Hi Dave Can you tell me more specific. Thanks, Here are ifconfig: ifconfig eth0 Link encap:Ethernet HWaddr 08:00:27:00:32:0c inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe00:320c/64 Scope:Link UP BROADCAST RUNNING

Re: JmxReporter.java (line 388) Error processing

It maybe easier to manage virtualbox using vagrant ( http://www.vagrantup.com/ ). I am going to assume eth0 from your ifconfig output is a dhcp/dynamic IP address thats going to change every time you halt/start your virtualbox instance. Virtualbox is far outside the scope of C* so I'd recommend

Re: JmxReporter.java (line 388) Error processing

Hi Dave I added *listen_address:*10.0.2.15 to the *cassandra.yaml *file and it worked. But i got another error please look at errors(short): ERROR 14:47:00,398 Exception encountered during startup java.lang.RuntimeException: No other nodes seen! Unable to bootstrap.If you intended to start a

Re: Cassandra nodetool repair question

nodetool repair just triggers repair procedure. You can kill nodetool after start, it doesn't change anything. To stop repair you have to use nodetool stop VALIDATION|COMPACTION Thank you, Andrey On Thu, Aug 8, 2013 at 1:00 PM, Andy Losey and...@addthis.com wrote: Afternoon, We are

Re: Cassandra nodetool repair question

But node might be streaming data as well, in that case only option is to restart node that started streaming operation Sent from my iPhone On Aug 8, 2013, at 5:56 PM, Andrey Ilinykh ailin...@gmail.com wrote: nodetool repair just triggers repair procedure. You can kill nodetool after start,

Re: Any good GUI based tool to manage data in Casandra?

I've seen your email last week and saved it to ping you about DevCenter: http://www.datastax.com/dev/blog/introducing-datastax-devcenter. Please keep in mind that this is just the first version and we need suggestions/bug reports/etc. :- a) On Wed, Aug 7, 2013 at 11:18 AM, Tony Anecito