ChrisHegarty commented on code in PR #13985:
URL: https://github.com/apache/lucene/pull/13985#discussion_r1842566686
##########
lucene/core/src/java/org/apache/lucene/codecs/KnnVectorsReader.java:
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@@ -123,4 +123,11 @@ public abstract void search(
public KnnVectorsReader getMergeInstance() {
return this;
}
+
+ /**
+ * Optional: reset or close merge resources used in the reader
+ *
+ * <p>The default implementation is empty
+ */
+ public void finishMerge() throws IOException {}
Review Comment:
How "sneaky" would it be to just update the read advice and return the same
instance. Then restore the random read advice on finishMerge. The reasonI
suggest this is that so far all options and discussions lead to sharing the
same underlying memory, so regardless on the actual instance type here, then
the advice is going to change on the memory.
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