There were some metrics added for multistage queries in: 70c4c5b

But there's still some work to be done. Even for some of the existing metrics like QPS, we are emitting those at table-level, so a given query would get counted for each table that is present in it, leading to an overestimation of QPS.

Creating this ticket for tracking and gathering any other requirements. We can follow-up with some quick PRs later.

• Emit Broker Response with Num Groups Limit reached metric

cc: @walterddr @vvivekiyer