Jackie-Jiang commented on code in PR #15095:
URL: https://github.com/apache/pinot/pull/15095#discussion_r1964630472
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pinot-query-runtime/src/main/java/org/apache/pinot/query/runtime/operator/AggregateOperator.java:
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@@ -108,33 +110,28 @@ public AggregateOperator(OpChainExecutionContext context,
MultiStageOperator inp
List<Integer> groupKeys = node.getGroupKeys();
- //process order trimming hint
- int groupTrimSize = getGroupTrimSize(node.getNodeHint(),
context.getOpChainMetadata());
-
- if (groupTrimSize > -1) {
- // limit is set to 0 if not pushed
- int nodeLimit = node.getLimit() > 0 ? node.getLimit() :
Integer.MAX_VALUE;
- int limit = GroupByUtils.getTableCapacity(nodeLimit, groupTrimSize);
- _groupTrimSize = limit;
- if (limit == Integer.MAX_VALUE) {
- // disable sorting because actual result can't realistically be bigger
the limit
- _priorityQueue = null;
+ int groupTrimSize = Integer.MAX_VALUE;
+ Comparator<Object[]> comparator = null;
+ int limit = node.getLimit();
+ if (limit > 0) {
+ List<RelFieldCollation> collations = node.getCollations();
+ if (collations.isEmpty()) {
+ groupTrimSize = limit;
Review Comment:
This matches the behavior in SSE. We can turn it off by disabling group
trim. Added a TODO similar to the one in `GroupByUtils`
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