Apache Druid

FYI you can also do it from the console (and observe the console doing what Gian said above) if you click `(edit)` next to `Cluster defaults` here:

for sure, but if there is something that you know how to do in the console. You could always check out the APIs that the console uses. I often look at the network tab in my browser running the console to remind myself what the API is. For example Gian said you use `_default` as the datasource name. I am 98% sure he is correct but (in my mind) there is a 2% chance it is actually `__default` that you need to set as the datasource name. If I wanted to be 100% sure either way I would just look at what the console is doing and then I would see that it is, in fact, `_default`. Plus! you can just copy the request as cURL or fetch, and that saves a ton of time.