[ Druid Rolling upgrade | helm | k8 ] Is there any one here using druid helm chart ( available in the druid repo ) In

Production

, if yes, I have few questions and will appreciate if you can share your experience on this . 1. Most concerning challenges you have encountered so far in the production? 2. Are you able to achieve 0 down time rolling upgrade ? ( ensuring 100% data availability and realtime ingestions as described in druid-rolling-upgrade guide If, Yes [2.1] How are you ensuring the service upgrade ordering [2.2] how are you ensuring MM manager upgrade without intruppting realtime ingestions [2.3] How are you ensuring historcal data availability during the upgrades .