Is there a C* summit this year?

Hi All, I was wondering if there is going to be a C* summit this year? If so, when can we expect? Thanks!

Re: Is it safe to upgrade 2.2.6 to 3.0.13?

We upgraded from 2.2.5 to 3.0.11 and it works fine. I will suggest not to go with 3.013, we are seeing some issues with schema mismatch due to which we had to rollback to 3.0.11. Thanks, Varun > On May 19, 2017, at 7:43 AM, Stefano Ortolani wrote: > > Here

Re: Cassandra Server 3.10 unable to Start after crash - commitlog needs to be removed

Yes the bugs need to be fixed, but as a work around on dev environment, you can enable cassandra.yaml option to override any corrupted commit log file. Thanks, Varun > On May 19, 2017, at 11:31 AM, Jeff Jirsa wrote: > > > >> On 2017-05-19 08:13 (-0700), Haris Altaf

Re: Cassandra Node Density thresholds

50% free is unnecessary. The only reason to keep that much free is if you wanted to regularly run major compactions, which you shouldn't. I'd aim for 75%. Bootstrap new nodes in when you get close to that number. Ensure you don't have any sstables larger than your available space and you'll be

Re: Cassandra Server 3.10 unable to Start after crash - commitlog needs to be removed

On 2017-05-19 08:13 (-0700), Haris Altaf wrote: > Hi All, > I am using Cassandra 3.10 for my project and whenever my local windows > system, which is my development environment, crashes then cassandra server > is unable to start. I have to delete commitlog directory after

Re: Cassandra Node Density thresholds

Asad, Ideally you should keep 50% free disk space. Yes, right now you have good option to scale horizontally or add more disk space if you can. Adding more nodes will give you more scalability for reads/writes and disk space will just give you more capacity for current load. Sent from my

Re: Cassandra Node Density thresholds

500 nodes, 20tb of ACTIVE DATA per node in hdfs, no brainer, no problem. But remember the cross DC traffic will get substantial. “All men dream, but not equally. Those who dream by night in the dusty recesses of their minds wake up in the day to find it was vanity, but the dreamers of the day are

Cassandra Node Density thresholds

Hello Folks - I'm using open source apache Cassandra 2.2 .My cluster is spread over 14 nodes in cluster in two data centers. My DC1 data center nodes are reaching 2TB of consumed volume. we don't have much space left on disk. I am wondering if there is guideline available that can point me to

Re: Cassandra Server 3.10 unable to Start after crash - commitlog needs to be removed

I have seen this happen as well. Deleting commit logs helps to Cassandra start but of course if you are very unlucky you might lose some data. Hannu > On 19 May 2017, at 18.13, Haris Altaf wrote: > > Hi All, > I am using Cassandra 3.10 for my project and whenever my

Cassandra Server 3.10 unable to Start after crash - commitlog needs to be removed

Hi All, I am using Cassandra 3.10 for my project and whenever my local windows system, which is my development environment, crashes then cassandra server is unable to start. I have to delete commitlog directory after every system crash. This is actually annoying and what's the purpose of commitlog

Re: Is it safe to upgrade 2.2.6 to 3.0.13?

Here (https://github.com/apache/cassandra/blob/cassandra-3.0/NEWS.txt) is stated that the minimum supported version for the 2.2.X branch is 2.2.2. On Fri, May 19, 2017 at 2:16 PM, Nicolas Guyomar wrote: > Hi Xihui, > > I was looking for this documentation also, but I

Re: Is it safe to upgrade 2.2.6 to 3.0.13?

Hi Xihui, I was looking for this documentation also, but I believe datastax removed it, and it is not available yet on the apache website As far as I remember, intermediate version was needed if C* Version < 2.1.7. You should be safe starting from 2.2.6, but testing the upgrade on a dedicated

Is it safe to upgrade 2.2.6 to 3.0.13?

Hi All, We are planning to upgrade our production cluster to 3.x, but I can't find the upgrade guide anymore. Can I upgrade to 3.0.13 from 2.2.6 directly? Is a interim version necessary? Thanks, Xihui

Reg:- Data Modelling Documentation

Hi Team, Just as Information, When Data modeling Document will be published on official link. Waiting for its so long time. Please update the document. Currently no any documents present. And please put document, which can be understood by the absolute beginner as well as others also. Thanks in