DivyanshIITB commented on code in PR #14373:
URL: https://github.com/apache/lucene/pull/14373#discussion_r2009127681


##########
lucene/CHANGES.txt:
##########
@@ -35,6 +35,10 @@ Optimizations
 ---------------------
 * GITHUB#14011: Reduce allocation rate in HNSW concurrent merge. (Viliam 
Durina)
 * GITHUB#14022: Optimize DFS marking of connected components in HNSW by 
reducing stack depth, improving performance and reducing allocations. 
(Viswanath Kuchibhotla)
+* GITHUB#14373: Optimized `ParallelLeafReader` to improve term vector fetching 
efficiency.
+- Fetches all term vectors once per reader instead of per field.
+- Reduces complexity from **O(n²) to O(n)**.
+- Enhances performance for documents with many fields. (Divyansh Agrawal)

Review Comment:
   I have modified `CHANGES.txt` as you said.



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