Re: Is it safe to remove (pid file folder) /var/run/cassandra

You can remove the pid folder but depending your script /etc/init.d/cassandra, you may have to create the folder by hand: # mkdir /var/run/cassandra && chown cassandra:cassandra /var/run/cassandra user 01 a écrit sur 19/03/2014 06:27:36 : > De : user 01 > A : user@cassandra.apache.org, >

Re: Production Quality Ruby Driver?

Hi Theo, On 19 Mar 2014, at 17:23, Theo Hultberg wrote: > And cql-rb is full featured when it comes to CQL3. It supports all features > of Cassandra 1.2. For some of the Cassandra 2.0 features you have to wait for > a final version of 2.0, but the current prerelease is stable and well tested.

DB file corruption

Hello, I have a cluster running cassandra 1.2.12. On one node I'm getting exceptions about corruption detected in one of the DB files. Exceptions occurred when I was trying to run the upgradesstables nodetool command. After this exception upgradesstables couldn't continue. Then I decided to run no

Help on StatusLogger output?

Hi, In my cassandra logs, I see a lot of "StatusLogger" output lines. I'm trying to understand why this is logged, and how to interpret the output. Maybe someone can point me to some documentation on this particular logging aspect? I would like to know what is triggering the StatusLogger.java to

Planet Cassandra

Hey all, Does anybody know who to contact to update the client tools page on Planet Cassandra and the Apache wiki? Cheers, Ben

Re: Planet Cassandra

Hey Ben, In regards to updating the client tools page on Planet Cassandra, I can help you out. Which items need updating or added? Thanks! Sent from my iPhone > On Mar 20, 2014, at 8:07 AM, Ben Hood <0x6e6...@gmail.com> wrote: > > Hey all, > > Does anybody know who to contact to update th

getting lots of dropped messages/requests/mutations but only on 2 of 6 servers

I have a six node cluster (running m2-2xlarge instances in AWS) with RF=3 and I'm seeing two of the six nodes reporting lots of dropped messages. The six machines are identical (created from same AWS AMI) so this local behavior has me puzzled. BTW this is mostly happening when I'm reading via sec

Re: Planet Cassandra

Hey Brady, Thanks for sorting this one out. The URL for gocql has changed to https://github.com/gocql/gocql I'd also like to add a link to cqlc (http://relops.com/cqlc/) which is a CQL compiler that works with gocql for Go. BTW, do you know who I need to bug for the Apache wiki? Many thanks,

this seems like a flaw in Node Selection

I've noticed that one of my systems is getting hammered...and that more and more traffic is being sent to the system having trouble. Looking at LeastLoadedNodeSelector.java I can see why. LoadLoadedNodeSelector finds the node in the cluster that is least loaded but its calculation of least loaded

Re: this seems like a flaw in Node Selection

On Thu, Mar 20, 2014 at 12:31 PM, Brian Tarbox wrote: > I've seen this problem with other companies and products: leastloaded as a > means of picking servers is almost always liable to death spirals when a > server can have a failure. > > Is there any way to configure away from this in C*? > Dis

Re: this seems like a flaw in Node Selection

Does this still apply since we're using 1.2.13? (should have said that in the original message)> Thank you. On Thu, Mar 20, 2014 at 3:57 PM, Robert Coli wrote: > On Thu, Mar 20, 2014 at 12:31 PM, Brian Tarbox > wrote: > >> I've seen this problem with other companies and products: leastloade

Re: this seems like a flaw in Node Selection

On Thu, Mar 20, 2014 at 1:03 PM, Brian Tarbox wrote: > Does this still apply since we're using 1.2.13? (should have said that in > the original message)> > I checked the cassandra-1.2 branch to verify that the "dynamic_snitch" config file option is still supported there; it is. =Rob

Re: this seems like a flaw in Node Selection

Brian, Are you referring to Pelops? The code you mentioned doesn't exist in Cassandra. On Thu, Mar 20, 2014 at 3:07 PM, Robert Coli wrote: > On Thu, Mar 20, 2014 at 1:03 PM, Brian Tarbox wrote: > >> Does this still apply since we're using 1.2.13? (should have said that >> in the original mes

Re: this seems like a flaw in Node Selection

Yes, I was going to say (sorry for the brain-freeze) that this is behavior in Pelops not in C* itself. On Thu, Mar 20, 2014 at 4:15 PM, Tyler Hobbs wrote: > Brian, > > Are you referring to Pelops? The code you mentioned doesn't exist in > Cassandra. > > > On Thu, Mar 20, 2014 at 3:07 PM, Rober

Re: this seems like a flaw in Node Selection

On Thu, Mar 20, 2014 at 1:17 PM, Brian Tarbox wrote: > Yes, I was going to say (sorry for the brain-freeze) that this is behavior > in Pelops not in C* itself. > *OH* I presumed you were talking about the code in Cassandra that does the analogous thing.. :D Yes, obviously don't disable the

Re: Problems with adding datacenter and schema version disagreement

Bump one more time, could anybody help me? regards Olek 2014-03-19 16:44 GMT+01:00 olek.stas...@gmail.com : > Bump, could anyone comment this behaviour, is it correct, or should I > create Jira task for this problems? > regards > Olek > > 2014-03-18 16:49 GMT+01:00 olek.stas...@gmail.com : >> Oh,

Re: Problems with adding datacenter and schema version disagreement

On Thu, Mar 20, 2014 at 2:23 PM, olek.stas...@gmail.com < olek.stas...@gmail.com> wrote: > Bump one more time, could anybody help me? > Unfortunately, while I can advise you how to resolve "my cluster has multiple schema versions", I have no assistance to offer for "my cluster ends up with split

sstable partitioner converter tool

Hello, We wanted to migrate our data from a RandomPartitioner cluster to a Murmur3Partitioner cluster via sstableloader, but it does not support directly loading sstables to a cluster with a different partitioner. We didn't find any tool that performs the conversion between sstables from differen