return singleton reader mergespec in NoMergePolicy

apache · Mar 15, 2022 · 84cfe00 · 84cfe00
1 parent d2eb661
commit 84cfe00
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/lucene/core/src/java/org/apache/lucene/index/NoMergePolicy.java b/lucene/core/src/java/org/apache/lucene/index/NoMergePolicy.java
@@ -42,7 +42,12 @@ public MergeSpecification findMerges(
 
   @Override
   public MergeSpecification findMerges(List<CodecReader> readers) throws IOException {
-    return null;
+    // addIndexes(CodecReader...) now uses MergePolicy and MergeScheduler to add
+    // provided readers (LUCENE-10216). We retain the default behavior here to enable
+    // addIndexes for consumers like IndexRearranger.
+    // This does not merge existing segments, but uses SegmentMerger to add
+    // new incoming readers to the index.
+    return super.findMerges(readers);
   }
 
   @Override