richardstartin commented on a change in pull request #7530:
URL: https://github.com/apache/pinot/pull/7530#discussion_r723456155
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/operator/dociditerators/SVScanDocIdIterator.java
##########
@@ -72,16 +73,23 @@ public int advance(int targetDocId) {
@Override
public MutableRoaringBitmap applyAnd(ImmutableRoaringBitmap docIds) {
- MutableRoaringBitmap result = new MutableRoaringBitmap();
- IntIterator docIdIterator = docIds.getIntIterator();
- int nextDocId;
- while (docIdIterator.hasNext() && (nextDocId = docIdIterator.next()) <
_numDocs) {
- _numEntriesScanned++;
- if (_valueMatcher.doesValueMatch(nextDocId)) {
- result.add(nextDocId);
+ RoaringBitmapWriter<MutableRoaringBitmap> result =
RoaringBitmapWriter.bufferWriter()
+ .expectedRange(0, _numDocs).runCompress(false).get();
+ BatchIterator docIdIterator = docIds.getBatchIterator();
+ int[] buffer = new int[256];
Review comment:
256 was the sweet spot here and I have used this value since. Maybe it's
worth investigating again.
https://github.com/RoaringBitmap/RoaringBitmap/pull/243#issuecomment-381278304
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