rmuir commented on code in PR #13424:
URL: https://github.com/apache/lucene/pull/13424#discussion_r1616250356


##########
lucene/core/src/java/org/apache/lucene/codecs/lucene90/compressing/Lucene90CompressingStoredFieldsReader.java:
##########
@@ -609,6 +622,23 @@ public void skipBytes(long numBytes) throws IOException {
     }
   }
 
+  @Override
+  public void prefetch(int docID) throws IOException {
+    final long blockID = indexReader.getBlockID(docID);
+
+    for (long prefetchedBlockID : prefetchedBlockIDCache) {
+      if (prefetchedBlockID == blockID) {
+        return;
+      }
+    }

Review Comment:
   can we use Arrays.binarysearch instead of scanning?



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