I was trying to rolling upgrade my db from 19.1.5 to 19.2.0 but failed.
I stopped my first server and replace with new binary; however, the whole cluster stop response.
I then roll-back the binary to 19.1.5, it did not help and server stop response.
I stopped every node, and restarted the cluster and failed.
I replace all binary to 19.2.0 and restarted, it failed.
I then set these two environment variables according to known limitation and the server restarted without issue.
I finalized the upgrade and let the server ran for a few hours everything looks good.
I removed the above environments and try to rolling restart each node, but the cluster stop responding.
I need to set the environment variables and restart the cluster, and then it works.
I don’t want to change any default setting, eg change range_max_bytes to 128MB, am I safe to keep the above environment variables for production? Cause if any of the server get rebooted, it may crash the whole cluster.