somandal commented on code in PR #10846:
URL: https://github.com/apache/pinot/pull/10846#discussion_r1220101094


##########
pinot-query-planner/src/main/java/org/apache/calcite/sql/fun/PinotOperatorTable.java:
##########
@@ -103,6 +98,61 @@ public final void initNoDuplicate() {
         throw Util.throwAsRuntime(Util.causeOrSelf(e));
       }
     }
+
+    // Walk through all the Pinot aggregation types and register those that 
are supported in multistage and which
+    // aren't standard Calcite functions such as SUM / MIN / MAX / COUNT etc.
+    for (AggregationFunctionType aggregationFunctionType : 
AggregationFunctionType.values()) {
+      if (aggregationFunctionType.isNativeCalciteAggregationFunctionType()
+          || !aggregationFunctionType.isSupportedInMultiStage()) {

Review Comment:
   @kishoreg i have removed that flag and moved out any specific APIs to do 
with multistage to the `PinotOperatorTable` instead.



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