RE: NoSE: Automated schema design for Cassandra

Hi, This is interesting, I’d just advise to put full examples and more documentation on how to use it (the articles are a bit too detailed). Also, you should not mention “column families” but just tables. Was this used to generate a schema used for production? Do you think it’s possible to gener

Re: Repairs on 2.1.12

never seen a repair loop, seems very unlikely. when you say "on a ring" what do you mean? what arguments are you passing to repair? On 10 May 2017 03:22, "Mark Furlong" wrote: I have a large cluster running a -dc repair on a ring which has been running for nearly two weeks. When I review the log

Difference between yum and git

Hi all, I'm trying a simple performance test. The test requests select operations (CL.SERIAL or CL.QUORUM) by increasing the number of threads. There is the difference of the performance between C* installed by yum and C* which I built by myself. What causes the difference? I use C* 2.2.8. One of

Re: Difference between yum and git

Hi Yuji, Were both tests run from the same machine at close the same time? If not, noisy neighbors may be affecting your performance on different AWS instances. You should verify that you're using the same version of Java during both tests. Also, ensure that you're using the same test instance (

Node containing all data of the cluster

Hey everyone, Imagine a have Cassandra cluster with 4 nodes. Is it possible to have a separate node which would not receive requests but would by in sync with the rest of the cluster? Ideally this super node would have all data of the cluster. I want to take a snapshot of this node from time to

Re: Node containing all data of the cluster

Hi Igor, You can setup cluster with configuration as below. Replication: DC1: 3 and DC2: 1. If you are using datastax java driver, then use dcaware load balancing policy and pass DC1, as input. As well as add DC2 node in ignore nodes, so request never goes to that node. Thanks, Varun On Wed, M

Re: Difference between yum and git

Hi Joaquin, > Were both tests run from the same machine at close the same time? Yes. I run the both tests within 30 min. I retried them today. The result was the same as yesterday. The test run on the same instances and the same Java. Thanks, Yuji On Thu, May 11, 2017 at 3:27 AM, Joaquin Casar

Re: Difference between yum and git

Where are you getting Cassandra 2.2 built from yum? On Wed, May 10, 2017 at 9:54 PM Yuji Ito wrote: > Hi Joaquin, > > > Were both tests run from the same machine at close the same time? > Yes. I run the both tests within 30 min. > I retried them today. The result was the same as yesterday. > > Th

cassandra 3.10

Hi – We’re currently on 3.9 and have been told that Cassandra 3.10 is a more stable version to be on. We’ve been using the datastax-ddc rpms in our production and dev environments (on 3.9) and it appears there is no 3.10 rpm version out yet. We tried to build our own rpm (our devops processes

Nodetool cleanup doesn't work

Hello, I am running into an issue where *nodetool cleanup *fails to cleanup data. We are running 2.1.16 version of Cassandra. [user@host ~]$ nodetool cleanup Aborted cleaning up atleast one column family in keyspace user, check server logs for more information. Aborted cleaning up atleast one co

DSE 5.0 Upgrade

Team, 1. What is the stable version for DSE 5.0 to upgrade from DSE 4.8.x? 2. Is anybody switched to using DSE Unified auth model which enfores to use one auth policy as primary and other secondary? 3. Do I need to use multi-auth/DSE Unified auth for me upgrade to DSE 5.0 or higher? Our old