costin commented on code in PR #16849:
URL: https://github.com/apache/lucene/pull/16849#discussion_r4296913917
##########
lucene/core/src/java/org/apache/lucene/util/BitSetIterator.java:
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@@ -96,12 +99,18 @@ public long cost() {
@Override
public int docIDRunEnd() {
assert doc != NO_MORE_DOCS;
- int next = doc + 1;
- if (next >= length) {
- return length;
+ // Called once per window by DenseConjunctionBulkScorer: resume from the
known run end and
+ // bound the scan, otherwise a long run is rescanned on every call, which
is quadratic.
+ if (doc < runStart || doc >= runEnd) {
Review Comment:
Improved the javadoc and `setDocId` to also resets the cache.
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