shatejas commented on code in PR #13985:
URL: https://github.com/apache/lucene/pull/13985#discussion_r1835999858
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lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99HnswVectorsReader.java:
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@@ -113,6 +114,25 @@ public Lucene99HnswVectorsReader(SegmentReadState state,
FlatVectorsReader flatV
}
}
+ private Lucene99HnswVectorsReader(
+ Lucene99HnswVectorsReader reader, KnnVectorsReader flatVectorsReader) {
+ assert flatVectorsReader instanceof FlatVectorsReader;
Review Comment:
> I would rather make this ctor take a FlatVectorsReader and push the
responsibility to callers to make the cast
This makes sense to me, I will change it
> maybe we don't even need a cast if we make getMergeInstance() return a
FlatVectorsReader
This seems difficult as of now,
[MergeState](https://github.com/shatejas/lucene/blob/12ca4779b962c96367f3e6a8b06523837e5e6434/lucene/core/src/java/org/apache/lucene/index/MergeState.java#L157)
expects KNNVectorsReader and FlatVectorsReader is wrapped inside of
KNNVectorsReader
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