Maybe others will have a different or better solution but, in my experience to accomplish HA we simply y write from our application to the new cluster. You then export the data from the old cluster using cql2json or any method you choose, to the new cluster. That will cover all live(now) data via y write, while supplying the old data from the copy you run. Once complete, set up a single reader that reads data from the new cluster and verify all is as expected!
Sent from my BlackBerry 10 smartphone on the Verizon Wireless 4G LTE network. From: Nandakishore Tokala Sent: Monday, March 25, 2019 18:39 To: user@cassandra.apache.org Reply To: user@cassandra.apache.org Subject: Merging two cluster's in to one without any downtime Please let me know the best practices to combine 2 different cluster's into one without having any downtime. Thanks & Regards, Nanda Kishore
