Jackie-Jiang commented on code in PR #13199:
URL: https://github.com/apache/pinot/pull/13199#discussion_r1609264849
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pinot-core/src/main/java/org/apache/pinot/core/operator/filter/AndFilterOperator.java:
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@@ -59,13 +60,14 @@ protected BlockDocIdSet getTrues() {
protected BlockDocIdSet getFalses() {
List<BlockDocIdSet> blockDocIdSets = new
ArrayList<>(_filterOperators.size());
for (BaseFilterOperator filterOperator : _filterOperators) {
- if (filterOperator.isResultEmpty()) {
- blockDocIdSets.add(new MatchAllDocIdSet(_numDocs));
+ if (_nullHandlingEnabled) {
+ blockDocIdSets.add(
+ new OrDocIdSet(Arrays.asList(filterOperator.getTrues(),
filterOperator.getNulls()), _numDocs));
Review Comment:
After a second thought, will this be even slower than the original one? Here
we are essentially creating an `OrDocIdSet` on every predicate.
We want to check whether the filter matches all or empty, then optimize the
`DocIdSet` accordingly.
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