In my understanding, user write some query(DrQL) and drill runs it using it's distributed execution engine.
Hive, Compare to drill, Hive runs HiveQL using map-reduce framework. It allow UDF and custom Map-Reduce script, and they deployed to all cluster at runtime. I read proposal and saw many pluggable components. eg. query interface, query execution engine operators. Will drill support user extension of it's query language? (like hive UDF) or more? (like hive custom map-reduce script) then how drill accomplish this? Thanks.
