Hi
My current druid version is 0.10.1 and trying to upgrade to 0.11.0
I generally follow druid default rolling upgrade as mentioned in
http://druid.io/docs/latest/operations/rolling-updates.html
Historical
Overlord (if any)
Middle Manager (if any)
Standalone Real-time (if any)
Broker
Coordinator ( or merged Coordinator+Overlord )
druid 0.11.0 upgrade release notes had a line
"During the upgrade process, there must not be any time period where a non-0.11.0 coordinator or overlord is running simultaneously with an 0.11.0 coordinator or overlord."
But I wanted to follow default rolling update pattern. I would want to upgrade overlord nodes on day 1 and proceed with middle manager and co ordinators the subsequent days… but till then cant keep the coordinator node down.
How do I fit 0.11.0 release upgrade with the general rolling upgrade
Should I restart overlord, middle manager and coordinator at the same day (because coordinator is usually upgraded at last )
Please suggest some way to resolve this upgrade issue.
Thanks,
Shilpa