Adding new DC results in clients failing to connect

2020-04-30 Thread Gediminas Blazys
Hello, We have run into a very interesting issue and maybe some of you have encountered it or just have an idea where to look. We are working towards adding new dcs into our cluster, here's the current topology: DC1 - 18 nodes DC2 - 18 nodes DC3 - 18 nodes DC4 - 18 nodes DC5 - 18 nodes Recentl

RE: [EXTERNAL] Re: Adding new DC results in clients failing to connect

2020-05-04 Thread Gediminas Blazys
tact point to see if all the node list / token info is expected. You can compare it to nodetool ring info. Not directly related: 256 vnodes is probably more than you want. Thanks, Jorge On Thu, Apr 30, 2020 at 9:48 AM Gediminas Blazys mailto:gediminas.bla...@microsoft.com.invalid>> wro

RE: [EXTERNAL] Re: Adding new DC results in clients failing to connect

2020-05-04 Thread Gediminas Blazys
preferred_ip rack release_version rpc_address schema_version tokens null null 192.168.104.111 null null null null null Have a wonderful day 😊 Gediminas From: Gediminas Blazys Sent: Monday, May 4, 2020 10:09 To: user

RE: [EXTERNAL] Re: Adding new DC results in clients failing to connect

2020-05-08 Thread Gediminas Blazys
72f988bf86f141af91ab2d7cd011db47%7C0%7C0%7C637244653454584013&sdata=%2B9ojISBaiyNt%2Fvlyat2wOCgDbFJIyXjmjuYMhPCB4YU%3D&reserved=0> Gediminas Blazys mailto:gediminas.bla...@microsoft.com.invalid>> escreveu no dia segunda, 4/05/2020 à(s) 11:13: Hello again, Looking into system.pee

RE: [EXTERNAL] Re: Adding new DC results in clients failing to connect

2020-05-17 Thread Gediminas Blazys
hen that error occurs. To determine the node you can look for this driver log message: "Connection established to [NODE_ADDRESS] using protocol version [VERSION]." It should be easier to reproduce the issue with the results of those queries. Thanks, João Reis Ged

Running and Managing Large Cassandra Clusters

2020-10-28 Thread Gediminas Blazys
Hello, I wanted to seek out your opinion and experience. Has anyone of you had a chance to run a Cassandra cluster of more than 350 nodes? What are the major configuration considerations that you had to focus on? What number of vnodes did you use? Once the cluster was up and running what would

RE: [EXTERNAL] Re: Running and Managing Large Cassandra Clusters

2020-10-28 Thread Gediminas Blazys
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RE: [EXTERNAL] Re: Running and Managing Large Cassandra Clusters

2020-10-29 Thread Gediminas Blazys
bGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Ba%2FIbybyy2p%2FsreGLBCxBedwl7mkgyBpy6%2BOPJWPcL8%3D&reserved=0> Making it easier for everyone to experience the world since 1996 43 languages, 214+ offices worldwide, 141,000+ global destinations, 29

Inexplicable dropped messages

2020-11-18 Thread Gediminas Blazys
Hello, Not so long ago, without any doing of our own we started observing an increased amount of dropped read messages and we can't find an explanation for it, perhaps you'll have some ideas where to look to try and decipher this. C* cluster: 7 DCs (5 of them with 18 nodes and 2 with 60) C* ver