What are the steps require to upgrade Druid version From 0.12.3 to 0.14.2

Can you please mention important steps to upgrade Druid version from 0.12.3 to 0.14.2.

Thanks in Advance.

Did you encounter any ‘gotchas’ while upgrading between these versions?

My doubt is to update the druid version from 0.12.3 to 0.15.0

only jar files update is enough or entire folder we have to extract and copy the configuration modifications what we made in 0.12.3 like memory settings.

Please suggest.

Yes, youn have to. Or, Have the configs in a separate folder, upgrade druid (install druid in a fresh folder), point the new installation’s conf folder to the existing configs folder and start services.