Hi All, For operators like filter, join, union, aggregate, window the logical RelNode choices are obvious within org.apache.calcite.rel.logical package.
However, for more complex applications that require operations like mapPartitions, flatMapGroupsWithState, etc. what would be some choices for logical rel node and relational expression classes in Apache Calcite (independent of engine)? What is a good way to model operators that are not traditionally relational and hence do not exist in Calcite (looking for hooks / extension points / roadmaps)? Thanks in advance for any pointers, (disclaimer: I am new to Calcite) Debajyoti Roy
