comment

Author: dnhatn

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/optimizer/rules/logical/TranslateTimeSeriesAggregate.java

@@ -157,6 +157,7 @@ LogicalPlan translate(TimeSeriesAggregate aggregate) {
             }
         }
         if (rateAggs.isEmpty()) {
+            // no time-series aggregations, run a regular aggregation instead.
             return new Aggregate(aggregate.source(), aggregate.child(), aggregate.groupings(), aggregate.aggregates());
         }
         Holder<Attribute> tsid = new Holder<>();