Implementing bitmap Indexes

I see that you may have priorities in your development.

and supporting multiple plugins for drill connections are also appreciated.

But your default storage engine is parquet, that is very cool for its kind of purposes.

Is it possible to bring forward implementing an index( roaring bitmap indexes similar to druid)?

or just to write a guideline for developing index on drill?

In fact full scan problems of drill is one of big problems that if solved, drill will be the best sql engine that can replace many use cases of databases.

Thank you in advance.