Hi, I need to implement a limited sql like filter+group+order, and the group is on a fixed-length prefix of the rowkey (fixed per query), and the results are multiple metrics including some custom ones like statistical unique counts.
I noticed that available tooling with coprocessors, like ColumnAggregationProtocol, involve just one metric e.g. one sum(column). We collect many, and of course it is more efficient to scan the data once. Please advise, Nicu
