shatejas commented on code in PR #13985:
URL: https://github.com/apache/lucene/pull/13985#discussion_r1842587936
##########
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 in finishMerge. The reason I
suggest this is that so far all options and discussions lead to sharing the
same underlying memory, so regardless on the actual instance here, then the
advice is going to change on the memory.
Makes sense to me, and if we switch to `close` we can switch to the approach
mentioned by @jpountz in
https://github.com/apache/lucene/pull/13985#discussion_r1835532510. I will make
the change
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