Re: Cassandra on Kubernetes

ications right now? > > I haven't read/heard any major production stateful application running on > k8s. > > > -Akshit > > > > > On Wed, 30 Oct, 2019, 8:12 PM Jean-Armel Luce, wrote: > >> Hi, >> >> We are currently developping CassKop, a C

Re: Cassandra on Kubernetes

Hi, We are currently developping CassKop, a Cassandra operator for K8S. This operator is developped in Go, based on the operator-sdk framework. At this time of the project, the goal is to deploy a Cassandra cluster in 1 Kubernetes datacenter, but this will change in next versions to deal with Kub

CassKop : a Cassandra operator for Kubernetes developped by Orange

Hi folks, We are excited to announce that CassKop, a Cassandra operator for Kubernetes developped by Orange teams, is now ready for Beta testing. CassKop works as a usual K8S controller (reconcile the real state with a desired state) and automates the Cassandra operations through JMX. All the ope

Re: Compaction Strategy guidance

Hi Andrei, Hi Nicolai, Which version of C* are you using ? There are some recommendations about the max storage per node : http://www.datastax.com/dev/blog/performance-improvements-in-cassandra-1-2 "For 1.0 we recommend 300-500GB. For 1.2 we are looking to be able to handle 10x (3-5TB)". I have

Re: Compaction Strategy guidance

Hi Nikolai, Please could you clarify a little bit what you call "a large amount of data" ? How many tables ? How many rows in your largest table ? How many GB in your largest table ? How many GB per node ? Thanks. 2014-11-24 8:27 GMT+01:00 Jean-Armel Luce : > Hi Nikolai, &

Re: Compaction Strategy guidance

Hi Nikolai, Thanks for those informations. Please could you clarify a little bit what you call " 2014-11-24 4:37 GMT+01:00 Nikolai Grigoriev : > Just to clarify - when I was talking about the large amount of data I > really meant large amount of data per node in a single CF (table). LCS does >

Re: Why repair -pr doesn't work when RF=0 for 1 DC

Hi Fabrice and Yuri, Thanks for your questions and answers. >From my point of view, it is now a common architecture to have 1 or more DC for on line queries, and 1 DC for stats. It is also very common (and recommended ?) to specify -pr option for anti-entropy repair operations. In my case, I ha

Re: Upgrading 1.1 to 1.2 in-place

Hi, I don't know how your application works, but I explained during the last Cassandra Summit Europe how we did the migration from relational database to Cassandra without any interruption of service. You can have a look at the video http://www.youtube.com/watch?v=mefOE9K7sLI And use the mod-dup

Re: is there a key to sstable index file?

@Michal : look a this for the improvement of read performance : https://issues.apache.org/jira/browse/CASSANDRA-2498 Best regards. Jean Armel 2013/7/18 Michał Michalski > SSTables are immutable - once they're written to disk, they cannot be > changed. > > On read C* checks *all* SSTables [1],

Re: Ten talks you shouldn’t miss at the Cassandra Summit

A envoyer à Pierre http://www.datastax.com/dev/blog/ten-talks-you-shouldnt-miss-at-the-cassandra-summit 2013/5/8 Jonathan Ellis > The Cassandra Summit is just over a month away! I wrote up my > thoughts on the talks I'm most excited for here: > > http://www.datastax.com/dev/blog/ten-talks-you

Re: Really have to repair ?

Hi Cyril, According to the documentation ( http://wiki.apache.org/cassandra/Operations#Frequency_of_nodetool_repair), I understand that is is not necessary to repair every node before gc_grace_seconds if you are sure that you don't miss to run a repair each time a node is down longer than gc_grace

Re: Failed migration from 1.1.6 to 1.2.2

Hi Alain, Maybe it is due to https://issues.apache.org/jira/browse/CASSANDRA-5299 A patch is provided with this ticket. Regards. Jean Armel 2013/3/14 Alain RODRIGUEZ > Hi > > We just tried to migrate our production cluster from C* 1.1.6 to 1.2.2. > > This has been a disaster. I just switch o

Re: Consistency level for system_auth keyspace

one could result in some requests that are rejected being >> allowed on other nodes. >> >> Cheers >> >> >>- >> Aaron Morton >> Freelance Cassandra Developer >> New Zealand >> >> @aaronmorton >> http://www.thelastpickle.com &g

Re: Consistency level for system_auth keyspace

e when data center splits. > > Dean > > From: Jean-Armel Luce mailto:jaluc...@gmail.com>> > Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" < > user@cassandra.apache.org<mailto:user@cassandra.apache.org>> > Date: Monday, March 4

Re: Consistency level for system_auth keyspace

gt; > @aaronmorton > http://www.thelastpickle.com > > On 1/03/2013, at 6:40 AM, Jean-Armel Luce wrote: > > Hi, > > > I am using Cassandra 1.2.2. > There are 16 nodes in my cluster in 2 datacenters (8 nodes in each > datacenter). > I am using NetworkTopologyStrate

Re: Other nodes are seen down with rpc_address 0.0.0.0 in version 1.2.2

Hi Michal, Thanks for your quick answer. I am going to apply the patch defined in CASSANDRA-5299. Regards. Jean Armel

Re: Adding new nodes in a cluster with virtual nodes

Hi Aaron, I tried again to add a node in the cluster. This time, I added the new node in the seeds list after the bootstrap (the first time, I added the new node in the seeds list before the bootstrap). And it works !!! Thanks Aaron. Regards. Jean Armel. 2013/2/22 Jean-Armel Luce > Tha

Re: Adding new nodes in a cluster with virtual nodes

nsistent data, so long as you have only added one node. Or one node every > RF'th nodes. > > Cheers > > > - > Aaron Morton > Freelance Cassandra Developer > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 22/02/2013, at

Re: Adding new nodes in a cluster with virtual nodes

Hi Aaron, Thanks for your answer. I apologize, I did a mistake in my 1st mail. The cluster was only 12 nodes instead of 16 (it is a test cluster). There are 2 datacenters b1 and s1. Here is the result of nodetool status after adding a new node in the 1st datacenter (dc s1): root@node007:~# node

Adding new nodes in a cluster with virtual nodes

Hello, We are using Cassandra 1.2.0. We have a cluster of 16 physical nodes, each node has 256 virtual nodes. We want to add 2 new nodes in our cluster : we follow the procedure as explained here : http://www.datastax.com/docs/1.2/operations/add_replace_nodes. After starting 1 of the new node, we

In REAME.txt : CQL3 instead of CQL2 ?

Hello, I have installed the 1.2 beta2 (download source + compil) The CREATE SCHEMA fails if I do as explained in README.txt : bin/cqlsh --cql3<== --cql3 is the default in 1.2 so it is not needed Connected to Test Cluster at localhost:9160. [cqlsh 2.3.0 | Cassandra 1.2.0-beta2-SNAPSHOT | CQL

Re: How to set LeveledCompactionStrategy for an existing table

ail > thread ? > > Can you include this: CFPropDefs.applyToCFMetadata() does not set the > compaction class on CFM > > Thanks > > > - > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 31/08/2012, at 7:05

Re: How to set LeveledCompactionStrategy for an existing table

parameters:sstable_compression='SnappyCompressor'; Maybe something is wrong in my server. Any idea ? Thanks. Jean-Armel 2012/8/30 feedly team > in cassandra-cli, i did something like: > > update column family xyz with > compaction_strategy='LeveledCompactionStrategy&#

How to set LeveledCompactionStrategy for an existing table

Hello, I am using Cassandra 1.1.1 and CQL3. I have a cluster with 1 node (test environment) Could you tell how to set the compaction strategy to Leveled Strategy for an existing table ? I have a table pns_credentials jal@jal-VirtualBox:~/cassandra/apache-cassandra-1.1.1/bin$ ./cqlsh -3 Connected

Re: Secondary index and/or row key in the read path ?

Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 20/08/2012, at 6:33 PM, Jean-Armel Luce wrote: > > > Hello, > > I am using Cassandra 1.1.1 and CQL3. > > Could you tell me what is the best strategy for retrieving a row u

Secondary index and/or row key in the read path ?

Hello, I am using Cassandra 1.1.1 and CQL3. Could you tell me what is the best strategy for retrieving a row using a condition on a row key (operator =) and also filter on a 2nd column? For example, I create a table named "testwhere" with a row key on column "mykey" and 2 other columns "col1" a