richardstartin commented on code in PR #8523:
URL: https://github.com/apache/pinot/pull/8523#discussion_r850814317
##########
pinot-core/src/main/java/org/apache/pinot/core/plan/CombinePlanNode.java:
##########
@@ -185,4 +136,84 @@ public List<Operator> callJob() {
return new DistinctCombineOperator(operators, _queryContext,
_executorService);
}
}
+
+ private List<Operator> getOperatorsSingleThreaded() {
+ List<Operator> operators = new ArrayList<>(_planNodes.size());
+ for (PlanNode planNode : _planNodes) {
+ operators.add(planNode.run());
+ }
+ return operators;
+ }
+
+ private List<Operator> getOperatorsMultiThreaded(int numThreads) {
Review Comment:
the actual implementation ensures that this some would propagate into the
thread pool for lineage purposes, so any scope created within the thread pool
would have the right parent, if that's what you want to achieve
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