jtibshirani commented on a change in pull request #287:
URL: https://github.com/apache/lucene/pull/287#discussion_r705530357
##########
File path: lucene/core/src/java/org/apache/lucene/util/hnsw/HnswGraph.java
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@@ -334,4 +324,43 @@ public int maxLevel() {
public int entryNode() {
return entryNode;
}
+
+ /**
+ * Get all nodes on a given level as node 0th ordinals
+ *
+ * @param level level for which to get all nodes
+ * @return an iterator over nodes where {@code nextDoc} returns a next node
+ */
+ public DocIdSetIterator getAllNodesOnLevel(int level) {
Review comment:
Is `DocIdSetIterator` the right choice? I've only seen us use this when
the output is really doc IDs. From searching through the repo, I didn't see a
common alternative though.
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