Re: Cassandra Storage per node
Thanks Christophe On Thursday, September 27, 2018 10:02 PM, Christophe Schmitz wrote: Hi Suresh, Welcome to Cassandra! Node density is an important topic with Cassandra. Depending on the node type, data usage, and your operational expertise, you can go somewhere between 1TB and 3TB of data size. If you just start, stay below of 1TB to avoid troubles. Storing too much data on a node make it difficult to run repairs, to replace node, add nodes etc As you plan to use STCS, you should know that in the worth case scenario, during major compactions, you might need about twice the volume size of your data (on a given node) to complete the compaction, so make sure you plan for that too. Final note, concerning the type of disk, you should be perfectly fine with SSD RAID0. If your application is read intensive, and you want to have the lowest latency possible, you could go with the more expensive NVME. If that was the case, you should also look at using LTCS instead of STCS. Hope this help! Cheers,Christophe Christophe Schmitz - Instaclustr - Cassandra | Kafka | Spark Consulting On Fri, 28 Sep 2018 at 14:43 Suresh Rajagopal wrote: Hi, I am new to Cassandra. Is there any recommended maximum data size per node for Cassandra 3 with STCS. Also any recommendation on SSD RAID 0 vs NVME JBOD? ThanksSuresh
Re: Multi dc reaper
Is the multidc reaper for load balancing if one goes dpwn another node can take care of shchedule repairs or we can actuly schedule repairs at dc level woth seperate reaper instances. I am planning to have 3 reaper instances in 3 dc . On Friday, September 28, 2018, Abdul Patel wrote: > Hi > > I have 18 node 3 dc cluster, trying to use reaper multi dc concept using > datacenteravailabiloty =EACH > But is there differnt steps as i start the first instance and add cluster > it repairs for full clustrr rather than dc. > Am i missing any steps? > Also the contact points on this scebario should be only relevabt to that > dc? >
Re: SNAPSHOT builds?
Okay, cool. So, 4.0.0-SNAPSHOT doesn’t have Java 11 support quite yet? No big deal. Just trying to get ahead of the game and be ready once we have it. Thanks, Jonathan! On Sat, Sep 29, 2018 at 11:16 AM Jonathan Haddad wrote: > Hey James, you’ll have to build it. Java 11 is out but the build > instructions still apply: > > http://thelastpickle.com/blog/2018/08/16/java11.html > > > On Sat, Sep 29, 2018 at 7:01 AM James Carman > wrote: > >> I am trying to find 4.x SNAPSHOT builds. Are they available anywhere >> handy? I'm trying to work on Java 11 compatibility for a library. >> >> Thanks, >> >> James >> > -- > Jon Haddad > http://www.rustyrazorblade.com > twitter: rustyrazorblade >
Re: SNAPSHOT builds?
Hey James, you’ll have to build it. Java 11 is out but the build instructions still apply: http://thelastpickle.com/blog/2018/08/16/java11.html On Sat, Sep 29, 2018 at 7:01 AM James Carman wrote: > I am trying to find 4.x SNAPSHOT builds. Are they available anywhere > handy? I'm trying to work on Java 11 compatibility for a library. > > Thanks, > > James > -- Jon Haddad http://www.rustyrazorblade.com twitter: rustyrazorblade
SNAPSHOT builds?
I am trying to find 4.x SNAPSHOT builds. Are they available anywhere handy? I'm trying to work on Java 11 compatibility for a library. Thanks, James
