Nitan, thanks for your reply. The new node in different DC is added as same DC, so i mean I use quorum or all for three replicate not local quorum. does the long latency will block coordinate and affect the performance?
dayu | | dayu 邮箱:sdycre...@163.com | Signature is customized by Netease Mail Master On 12/16/2018 02:00, Nitan Kainth wrote: Dayu, If you use local quorum it won't impact read and write latencies but there will be delay in across DC replication; which may cause some application issues if it is active active. But 2ms is probably negligible to see any effect. On Sat, Dec 15, 2018 at 11:57 AM dayu <sdycre...@163.com> wrote: Hi all, I am adding a new node to cassandra,but the new node is at different DC,the ping latency between them is 2 ms. I am wondering does the long latency would affect cluster's performance or thoughput? Thank! dayu | | dayu 邮箱:sdycre...@163.com | Signature is customized by Netease Mail Master