Re: 0.7.5 Debian packages - can't upgrade?

Thanks for the response. :) I should have also mentioned that I'm running this on Ubuntu Karmic Koala(9.10). The output of `sudo aptitude full-upgrade` looks the same as safe-upgrade: > Reading package lists... Done > Building dependency tree > Reading state i

Re: 0.7.5 Debian packages - can't upgrade?

On Sat, 2011-04-30 at 09:34 +1000, Dan Washusen wrote: > > sudo aptitude update > > sudo aptitude safe-upgrade > > > The upgrade shows this: > > > Reading package lists... Done > > Building dependency tree > > Reading state information... Done > > Reading extended state information > > Initiali

0.7.5 Debian packages - can't upgrade?

Hey all, I can't seem upgrade to 0.7.5 using the Debian packages. Here's what I've done... Edited sources.list and changed "unstable" to "07x". > deb http://www.apache.org/dist/cassandra/debian 07x main > deb-src http://www.apache.org/dist/cassandra/debian 07x main Add the new key. > sudo gp

Re: best way to backup

William, Some info on the sstables from me http://thelastpickle.com/2011/04/28/Forces-of-Write-and-Read/ If you want to know more check out the BigTable and original Facebook papers, linked from the wiki Aaron On 29 Apr 2011, at 23:43, William Oberman wrote: > Dumb question,

Re: Heavy writes ok for single node, but failed for cluster

Can you try turning up the logging to TRACE, if you know how turn it up for the org.apache.cassandra.gms.FailureDetector and org.apache.cassandra.gms.Gossiper loggers You'll see a lot of messages. Some of the interesting ones will be... "FailureDetector.java (line 128) reporting /127.0.0.2" -

Re: Column (byte[], byte[], long) - error in compilation and inserting

[moving to user list] It's not clear to me what "the library" is that you're using or what Cassandra version you're trying to talk to. I'd recommend using the latest Hector 0.7 version, with Cassandra 0.7.5. On Fri, Apr 29, 2011 at 3:59 PM, L Mckay wrote: > I'm getting a compilation error in th

Re: Cassandra node throws NPE on startup

I've not heard of it happening in a production system. The commit log and the schema have diverged, that does not normally happen. Aaron On 29 Apr 2011, at 20:54, Subscriber wrote: > But isn't their a better way than to delete the commitlogs? > What do I do when this happens in a productive

Re: Experiences with Map&Reduce Stress Tests

It sounds like there might be some tuning you can do to your jobs - take a look at the wiki's HadoopSupport page, specifically the Troubleshooting section: http://wiki.apache.org/cassandra/HadoopSupport#Troubleshooting On Apr 29, 2011, at 11:45 AM, Subscriber wrote: > Hi all, > > We want to sh

Re: Performance tests using stress testing tool

> Thanks Peter. I am using java version of the stress testing tool from the > contrib folder. Is there any issue that should be aware of? Do you recommend > using pystress? I just saw Brandon file this: https://issues.apache.org/jira/browse/CASSANDRA-2578 Maybe that's it. -- / Peter Schuller

Re: best way to backup

Good point - we plan to do regular testing to restore the cluster. Also we might spin up a snapshot of the cluster for testing as well. Also I wonder how much time compression will save when it comes to restores. I'll have to run some tests on that. Thanks for posting. Jeremy On Apr 28, 201

Re: cassandra as an email store ...

Great read. thanks. On Apr 29, 2011 4:07 PM, "sridhar basam" wrote: > Have you already looked at some research out of IBM about this usecase? > Paper is at > > http://ewh.ieee.org/r6/scv/computer/nfic/2009/IBM-Jun-Rao.pdf > > Sridhar

Re: cassandra as an email store ...

Have you already looked at some research out of IBM about this usecase? Paper is at http://ewh.ieee.org/r6/scv/computer/nfic/2009/IBM-Jun-Rao.pdf Sridhar

Re: Performance tests using stress testing tool

Thanks Peter. I am using java version of the stress testing tool from the contrib folder. Is there any issue that should be aware of? Do you recommend using pystress? I will rerun tests in order to monitor ethernet stats closely and will update. -- Thanks, Baskar Duraikannu - Original M

Re: best way to backup

Dumb question, but referenced twice now: which files are the SSTables and why is backing them up incrementally a win? Or should I not bother to understand internals, and instead just roll with the "backup my keyspace(s) and system in a compressed tar" strategy, as while it may be excessive, it's g

Re: suggestion: sstable2json to ignore TTL

On Apr 27, 2011, at 17:10, Edward Capriolo wrote: > I would think most people who watch dev watch this list. > > http://wiki.apache.org/cassandra/HowToContribute So, here it is: https://issues.apache.org/jira/browse/CASSANDRA-2582

cassandra as an email store ...

Hi, Previous discussions have covered cassandra not being the best at storing large binary files and it makes more sense to store pointers to the files in cassandra and for the files themselves to be stored on a local file system or some other entity like amazon s3, etc. if i wanted to funnel all

Re: best way to backup

What we are about to set up is a time machine like backup. This is more like an add on to the s3 backup. Our boxes have an additional larger drive for local backup. We create a new backup snaphot every x hours which hardlinks the files in the previous snapshot (bit like cassandras incremental_b

Re: Cassandra node throws NPE on startup

But isn't their a better way than to delete the commitlogs? What do I do when this happens in a productive system? Ciao Udo Am 29.04.2011 um 02:07 schrieb aaron morton: > Thought you may have re-created the schema. > > Kill the process like that should be ok, let us know if you get the error

Re: Strange corrupt sstable

Bad == Broken That means you cannot rely on 1 == 1. In such a scenario everything can happen including data loss. That's why you want ECC mem on production servers. Our cheapo dev boxes dont. On Apr 28, 2011, at 7:46 PM, mcasandra wrote: > What do you mean by Bad memory? Is it less heap size,

Re: 07x apt repo signature

Yes, sorry about that, I should have sent a message upfront. I've updated the wiki. -- Sylvain On Fri, Apr 29, 2011 at 1:40 AM, Eric Evans wrote: > On Thu, 2011-04-28 at 21:48 +0100, Luke Biddell wrote: >> On the wiki it suggests installing the key F758CE318D77295D > > I suspect you need 2B5C1B0

Re: [RELEASE] Apache Cassandra 0.8.0 beta1

I rebuilt and redeployed the packages locally, apart from the necessary modification to /etc/cassandra/cassandra-env.sh (which is fixed in trunk) the packages now work properly. Regards, - pyr On mar., 2011-04-26 at 11:47 -0500, Jonathan Ellis wrote: > https://issues.apache.org/jira/browse/CASSA