siddharthteotia commented on a change in pull request #8139:
URL: https://github.com/apache/pinot/pull/8139#discussion_r800103629
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/MaxAggregationFunction.java
##########
@@ -54,13 +54,39 @@ public GroupByResultHolder createGroupByResultHolder(int
initialCapacity, int ma
@Override
public void aggregate(int length, AggregationResultHolder
aggregationResultHolder,
Map<ExpressionContext, BlockValSet> blockValSetMap) {
- double[] valueArray = blockValSetMap.get(_expression).getDoubleValuesSV();
double max = aggregationResultHolder.getDoubleResult();
- for (int i = 0; i < length; i++) {
- double value = valueArray[i];
- if (value > max) {
- max = value;
+ BlockValSet blockValSet = blockValSetMap.get(_expression);
Review comment:
I understand how delaying conversion to double will help with heap
usage. Couple of questions on performance:
- Now every aggregate() call has to execute switch condition once. Will
there be any perf penalty for this ?
- Why does conversion to double[] prevent auto-vectorizatonn ?
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
