Re: RE where is cassandra debian packages?

It looks like the /cassandra directory is missing from most of the mirrors right now. The only mirror that I've found to work is http://www.eu.apache.org On Fri, Aug 24, 2012 at 2:53 AM, ruslan usifov ruslan.usi...@gmail.com wrote: Hm, from erope servere cassandra packages prestn, but from

Re: cassandra twitter ruby client

That library requires you to serialize and deserialize the data yourself. So to insert a ruby Float you would value = 28.21 [value].pack('G') @client.insert(:somecf, 'key', {'floatval' = [value].pack('G')}) and to read it back out: value = @client.get(:somecf, 'key',

Re: cassandra on laptop

By default, Cassandra is configured to use half the ram of your system. That's way overkill for playing around with it on a laptop. Edit /etc/cassandra/cassandra-env.sh and set max_heap_size_in_mb to something more suited for your environment. I have it set to 256M for my laptop (with 4G of ram).

Re: EC2 Maintenance Reboot

Just rebooting a machine with ephemeral drives is ok (it does an os level reboot). You will also keep the same IP address. If you stop and then start a machine with ephemeral drives you will lose data. See: http://alestic.com/2011/09/ec2-reboot-stop-start On Wed, Dec 7, 2011 at 6:43 PM,

CF name length restrictions (CASSANDRA-4157 and CASSANDRA-4110)

We're working on upgrading from 1.0.12 to 1.1.12. After upgrading a test node I ran into CASSANDRA-4157 which restricts the max length of CF names to = 48 characters. It looks like CASSANDRA-4110 will allow us to upgrade and keep our existing long CF names, but we won't be able to create new CFs

Re: How to generate tokens for my two node Cassandra cluster?

I can't tell you why that one-liner isn't working, but you can try http://www.cassandraring.com for generating balanced tokens. On Thu, Oct 31, 2013 at 11:59 PM, Techy Teck comptechge...@gmail.comwrote: I am trying to setup two node Cassandra Cluster on windows machine. I have basically two

Re: Cass 1.2.11 : java.lang.AssertionError: originally calculated column size

The issue you should look at is CASSANDRA-4206. This is apparently fixed on 2.0 so upgrading is one option. If you are not ready to upgrade to 2.0 then you can try increasing in_memory_compaction. We were hitting this exception on one of our nodes and increasing in_memory_compaction did fix it.

Re: VPC AWS

Your general assessments of the limitations of the Ec2 snitches seem to match what we've found. We're currently using the GossipingPropertyFileSnitch in our VPCs. This is also the snitch to use if you ever want to have a DC in EC2 and a DC with another hosting provider. -Peter On Mon, Jun 9,

Re: VPC AWS

, though it could be. Mitchell *From:* Peter Sanford [mailto:psanf...@retailnext.net psanf...@retailnext.net] *Sent:* Monday, June 09, 2014 7:19 AM *To:* user@cassandra.apache.org *Subject:* Re: VPC AWS Your general assessments of the limitations of the Ec2 snitches seem to match what

Re: Large number of row keys in query kills cluster

On Wed, Jun 11, 2014 at 10:12 AM, Jeremy Jongsma jer...@barchart.com wrote: The big problem seems to have been requesting a large number of row keys combined with a large number of named columns in a query. 20K rows with 20K columns destroyed my cluster. Splitting it into slices of 100

Re: Large number of row keys in query kills cluster

On Wed, Jun 11, 2014 at 9:17 PM, Jack Krupansky j...@basetechnology.com wrote: Hmmm... that multipl-gets section is not present in the 2.0 doc: http://www.datastax.com/documentation/cassandra/2.0/cassandra/architecture/architecturePlanningAntiPatterns_c.html Was that intentional – is that

Re: incremental backups

You should delete the backup files once you have copied them off. Otherwise they will start to use disk space as the live SSTables diverge from the snapshots/incrementals. -psanford On Sat, Jun 14, 2014 at 10:17 AM, S C as...@outlook.com wrote: Is it ok to delete files from backups directory

Re: incremental backups

For snapshots, yes. For incremental backups you need to delete the files yourself. On Wed, Jun 18, 2014 at 6:28 AM, Marcelo Elias Del Valle marc...@s1mbi0se.com.br wrote: Wouldn't be better to use nodetool clearsnapshot? []s 2014-06-14 17:38 GMT-03:00 S C as...@outlook.com: I am

Re: Bitmaps

On Mon, Oct 6, 2014 at 1:56 PM, DuyHai Doan doanduy...@gmail.com wrote: Isn't there a video of Ooyala at some past Cassandra Summit demonstrating usage of Cassandra for text search using Trigram ? AFAIK they were storing kind of bitmap to perform OR AND operations on trigram That sounds

Re: Reboot: Read After Write Inconsistent Even On A One Node Cluster

Hmm. I was able to reproduce the behavior with your go program on my dev machine (C* 2.0.12). I was hoping it was going to just be an unchecked error from the .Exec() or .Scan(), but that is not the case for me. The fact that the issue seems to happen on loop iteration 10, 100 and 1000 is pretty

Re: Grafana data stored in a Cassandra database

This project implements the graphite api on top of Cassandra and can be used from grafana: https://github.com/pyr/cyanite On Wed, May 9, 2018 at 10:39 AM dba newsql wrote: > Any one use Cassandra as data storage for Grafana as timeseries DB? > > Thanks, > Fay >