Hello, I was thinking about adding [scrolling functionality]( https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-scroll.html) to elastic search adapter. Since scrolling has non-negligible effect on the cluster it should be selectively enabled on per query basis. So, likely, user has to explicitly set "scroll flag" somewhere. Most natural way seems in SQL. [Calcite sql grammar]( https://calcite.apache.org/docs/reference.html) has `SCROLL` keyword (unused to my knowledge). There were also discussions about adding hints to Calcite. ### Examples ```sql -- special sql keyword ? SCROLL select * from elastic; -- assuming hints are available in calcite /* HINT: scroll */ select * from elastic; ``` What people think about this use-case ? Are there better ideas ? Regards, Andrei.