jpountz commented on a change in pull request #364:
URL: https://github.com/apache/lucene/pull/364#discussion_r723849356
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File path:
lucene/core/src/java/org/apache/lucene/search/comparators/NumericComparator.java
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@@ -130,12 +130,45 @@ public NumericLeafComparator(LeafReaderContext context)
throws IOException {
}
}
- /** Retrieves the NumericDocValues for the field in this segment */
+ /**
+ * Retrieves the NumericDocValues for the field in this segment
+ *
+ * <p>If you override this method, you must also override {@link
+ * #getPointValues(LeafReaderContext, String)} This class uses sort
optimization that
+ * substitutes an iterator over doc_values with one over points, so it
relies on the assumption
Review comment:
Minor suggestion to give a higher-level description of how the
optimization works since users might not be familiar with the implementation
deltails.
```suggestion
* leverages points to filter out non-competitive matches, which relies
on the assumption
```
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