jtibshirani commented on code in PR #1054:
URL: https://github.com/apache/lucene/pull/1054#discussion_r950631004
##########
lucene/core/src/java/org/apache/lucene/codecs/KnnVectorsFormat.java:
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@@ -76,6 +78,15 @@ public static KnnVectorsFormat forName(String name) {
/** Returns a {@link KnnVectorsReader} to read the vectors from the index. */
public abstract KnnVectorsReader fieldsReader(SegmentReadState state) throws
IOException;
+ /**
+ * Returns the current KnnVectorsFormat version number. Indexes written
using the format will be
+ * "stamped" with this version.
+ */
+ public int currentVersion() {
Review Comment:
Here's what I had in mind: https://github.com/apache/lucene/pull/1077. We
would just move the checks to test classes.
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