Re: Cassandra data sync time

2022-09-26 Thread Bowen Song via user
It looks like you have replication factor of 3 and total data size of 1.43 GB per node. That's very small amount of data. Assuming the bottleneck is the network, not CPU or disk, and your 50 Mbps bandwidth is between each pair of servers across the two DCs (i.e. not the total bandwidth

Re: Cassandra data sync time

2022-09-26 Thread Kaushal Shriyan
On Fri, Sep 23, 2022 at 8:39 PM Bowen Song via user < user@cassandra.apache.org> wrote: > What's your definition of "sync"? Streaming all the existing data to the > new DC? or the time lag between a write request is completed in one DC and > the other DC? > > The former can be estimated based on

Re: Cassandra data sync time

2022-09-23 Thread Bowen Song via user
What's your definition of "sync"? Streaming all the existing data to the new DC? or the time lag between a write request is completed in one DC and the other DC? The former can be estimated based on a few facts about your setup (number of nodes, data size, etc.) and some measured data

Cassandra data sync time

2022-09-23 Thread Kaushal Shriyan
Hi, Is there a way to measure cassandra nodes data sync time between DC1 and DC2? Currently DC1 is the prod datacenter. I am adding DC2 to the new data center by referring to https://docs.apigee.com/private-cloud/v4.51.00/adding-data-center?hl=en.