Hi Drillers, I was planning to explore the Drill Query parsing and optimization tasks.
As suggested by Jinfeng, I am looking into *DrillRuleSets.java* for understanding existing rules & *DrillOptiq.java* to understand how Optiq RelNodes are converted to Drill expressions. @ Julian, Drill currently uses Optiq as the SQL parser and Query Optimizer. I wanted tips from you to start exploring Optiq optimization rules. What could be some good places to start understanding/debugging. @All: Any tips would be appreciated. Thanks, Yash
