Re: New seed node in the cluster immediately UN without passing for UJ state

2020-02-25 Thread Sergio
Hi Erick! Just follow up to your statement: Limiting the seeds to 2 per DC means : A) Each node in a DC has at least 2 seeds and those seeds belong to the same DC or B) Each node in a DC has at least 2 seeds even across different DC Thanks, Sergio Il giorno gio 13 feb 2020 alle ore 19:46 Er

RE: New seed node in the cluster immediately UN without passing for UJ state

2020-02-25 Thread ZAIDI, ASAD
Seed node doesn’t bootstrap so if new node were to act as seed node, official recommendations are to boot strap ‘new’ node first , only after that list that node as seed. Seed nodes are usually same across cluster nodes. You can designate 2 nodes as seed per dc in order to mitigate network lat

Re: New seed node in the cluster immediately UN without passing for UJ state

2020-02-25 Thread Erick Ramirez
> > Just follow up to your statement: > Limiting the seeds to 2 per DC means : > A) Each node in a DC has at least 2 seeds and those seeds belong to the > same DC > or > B) Each node in a DC has at least 2 seeds even across different DC > I apologise for the ambiguity of my previous response, I se

Re: Corrupt SSTable Cassandra 3.11.2

2020-02-25 Thread manish khandelwal
Thanks all for your support. I executed the discussed process (barring repair, as table was read for reporting only) and it worked fine in production. Regards Manish >

Hints replays very slow in one DC

2020-02-25 Thread Krish Donald
Hi, We have 2 datacenters in our cassandra cluster. Whenever a node goes down in DC1 and hints gets collected in all other nodes then what we have noticed is that hints replay is very very slow in DC1 node but if a node goes down in DC2 and comes back, hints replay fast. We are on 3.11.0 We are u

Re: Hints replays very slow in one DC

2020-02-25 Thread Erick Ramirez
Krish, with the limited info and assuming things like hint throttle and delivery threads all being equal, my guess would be DC1 is your primary DC and is busier than DC2. Got any diagnostic data/troubleshooting info you could share? Otherwise, it's a little difficult to speculate as to what may be

Re: Hints replays very slow in one DC

2020-02-25 Thread Krish Donald
DC2 is our main datacenter which serves all the traffic. This cluster has Materialized views. On Tue, Feb 25, 2020 at 9:32 PM Erick Ramirez wrote: > Krish, with the limited info and assuming things like hint throttle and > delivery threads all being equal, my guess would be DC1 is your primary

Re: Hints replays very slow in one DC

2020-02-25 Thread Erick Ramirez
What's the reason for nodes going down? Is it because the cluster is overloaded? Hints will get handed off periodically when nodes come back to life but if they happen to go down again or become unresponsive (for whatever reason), the handoff will be delayed until the next cycle. I think it's every