diff --git a/server/src/internalClusterTest/java/org/opensearch/search/nested/SimpleNestedExplainIT.java b/server/src/internalClusterTest/java/org/opensearch/search/nested/SimpleNestedExplainIT.java
index a6554271a0bc5..2efec6a63e6c1 100644
--- a/server/src/internalClusterTest/java/org/opensearch/search/nested/SimpleNestedExplainIT.java
+++ b/server/src/internalClusterTest/java/org/opensearch/search/nested/SimpleNestedExplainIT.java
@@ -30,6 +30,11 @@
  */
 public class SimpleNestedExplainIT extends OpenSearchIntegTestCase {
 
+    @Override
+    protected int numberOfShards() {
+        return 1;
+    }
+
     /*
      * Tests the explain output for multiple docs. Concurrent search with multiple slices is tested
      * here as call to indexRandomForMultipleSlices is made and compared with explain output for
@@ -70,7 +75,23 @@ public void testExplainMultipleDocs() throws Exception {
             .setRefreshPolicy(IMMEDIATE)
             .get();
 
-        indexRandomForMultipleSlices("test");
+        client().prepareIndex("test")
+            .setId("2")
+            .setSource(
+                jsonBuilder().startObject()
+                    .field("field1", "value2")
+                    .startArray("nested1")
+                    .startObject()
+                    .field("n_field1", "n_value2")
+                    .endObject()
+                    .startObject()
+                    .field("n_field1", "n_value2")
+                    .endObject()
+                    .endArray()
+                    .endObject()
+            )
+            .setRefreshPolicy(IMMEDIATE)
+            .get();
 
         // Turn off the concurrent search setting to test search with non-concurrent search
         client().admin()
diff --git a/server/src/main/java/org/opensearch/search/internal/ContextIndexSearcher.java b/server/src/main/java/org/opensearch/search/internal/ContextIndexSearcher.java
index ec3ed2332d0b8..824bb26c67160 100644
--- a/server/src/main/java/org/opensearch/search/internal/ContextIndexSearcher.java
+++ b/server/src/main/java/org/opensearch/search/internal/ContextIndexSearcher.java
@@ -540,11 +540,11 @@ LeafSlice[] slicesInternal(List<LeafReaderContext> leaves, int targetMaxSlice) {
         if (targetMaxSlice == 0) {
             // use the default lucene slice calculation
             leafSlices = super.slices(leaves);
-            logger.debug("Slice count using lucene default [{}]", leafSlices.length);
+            logger.info("Slice count using lucene default [{}]", leafSlices.length);
         } else {
             // use the custom slice calculation based on targetMaxSlice
             leafSlices = MaxTargetSliceSupplier.getSlices(leaves, targetMaxSlice);
-            logger.debug("Slice count using max target slice supplier [{}]", leafSlices.length);
+            logger.info("Slice count using max target slice supplier [{}]", leafSlices.length);
         }
         return leafSlices;
     }