Hi, I have started

PinotController

,

PinotBroker

and

PinotServer

using git branch

multi_stage_query_engine

code, still the join query is not working. Do I need to do something else?

Yes there are some configurations that needs to be used to enable it. I will create a new PR to enable it by default

Another thing I noticed, These components are getting started but when I do Build Project in IntelliJ, some classes are not found, for eg -

java: cannot find symbol
  symbol:   class Plan
  location: package org.apache.pinot.common.proto

Yes. Some of the code is code generated so you will have to do mvn install first and tag those directories as generated sources in intellij.

@Rong R Could you DM me config that I need to enable, later you could create PR?

yes. we created a quickstart but it is still on my branch https://github.com/walterddr/pinot/tree/pr_query_integration you can take it for a try