rmuir commented on a change in pull request #606:
URL: https://github.com/apache/lucene/pull/606#discussion_r784962069
##########
File path:
lucene/facet/src/java/org/apache/lucene/facet/taxonomy/FastTaxonomyFacetCounts.java
##########
@@ -126,23 +126,39 @@ private void countAll(IndexReader reader) throws
IOException {
NumericDocValues singleValued = DocValues.unwrapSingleton(multiValued);
if (singleValued != null) {
- for (int doc = singleValued.nextDoc();
- doc != DocIdSetIterator.NO_MORE_DOCS;
- doc = singleValued.nextDoc()) {
- if (liveDocs != null && liveDocs.get(doc) == false) {
- continue;
+ if (liveDocs != null) {
+ for (int doc = singleValued.nextDoc();
+ doc != DocIdSetIterator.NO_MORE_DOCS;
+ doc = singleValued.nextDoc()) {
+ if (liveDocs.get(doc)) {
+ values[(int) singleValued.longValue()]++;
+ }
+ }
+ } else {
Review comment:
i'm also suspicious of making `count()` and `countAll()` bigger and
bigger with all these specializations.
I would recommend trying to factor out these little "accumulator" loops into
separate methods. They could then be shared across `count()` and `countAll()`.
At least when I looked at this stuff for solr DocValuesFacets, it was needed to
get performance across the various specializations there (admittedly this was a
while ago, maybe compiler is smarter now):
You can see what I mean if you start here in this file and scroll down:
https://github.com/apache/solr/blob/0f3893b8e08c7aaa81addda926303f7a0c6ee18c/solr/core/src/java/org/apache/solr/request/DocValuesFacets.java#L262
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