HI Jaswanth,
OSS Druid is community supported, through this and other forums (see
https://druid.apache.org/community/), so you can search through them to look for any issues others have run across that might be relevant to your use case.
There may be a few companies out there that provide production level support for OSS Druid ... also Imply (founded by the creators of Druid) provides a commercial supported implementation of Druid as well as a full SaaS version.
Fyi the latest release is 27, I suggest you consider picking that up instead of 26 in order to get the latest fixes and improvements:
https://github.com/apache/druid/releases/tag/druid-27.0.0 ...