I have a 2 node cluster in my current ignite setup. All caches are in partitioned mode with 0 backups. I need to add backups to all the caches and add more nodes to the same cluster.
From what I've tried, it looks like an existing cache cannot be modified to have backups. Is this possible? Can an existing cache with 0 backups, be modified to have 1 or more backups? If the modification on an existing cache is not possible, what is the solution for this? I created a new cache with tried migrating the data from the old cache to the new cache. But the data in the old cache is very large (Around 150 million rows). I used a client (Java thin client) to read an entire cache and process each row, then used ignite streamer to write data to the new cache. Since the data is huge, the Ignite cluster is crashing and only around 3 million rows are getting processed and migrated to the new cache.
What is the solution for adding backups to an existing cache with 0 backups? What is the optimal way to migrate 150 million records from one cache to another?
