Hi This is my first post in this mailing list. I am not sure if this is the right place to ask this question
I don't have any enterprise license. I am having a cluster like below 1. 3 Hbase Master (1 Active & 2 standby) 2. 4 Region Servers 3. 4 Data Nodes 4. 1 Primary & 1 Secondary Name Node 5. 3 Journal Node 6. 4 Nodemanager 7. 3 Resource Manager (1 Active & 2 standby) The underlying versions of hadoop & hbase components have not changed in 5.7 & 5.13. So can I just upgrade the services in any random order? For example let's say I have upgraded the Secondary Name Node and some data node to the latest 5.13. Will the updated node will be able to talk with the old 5.7 ? Is the latest 5.13 fully backward compatible with 5.7? Cluster downtime is not an issue but eventually when all the node is updated will the cluster be fine. The above question may sound little weird but in short I am asking this because the legacy set-up in which I am working right now does not have any centralized mechanism to control the upgrade like secondary NN first then primary & so on.
