diff --git a/server/src/main/java/org/opensearch/action/admin/cluster/wlm/QueryGroupStatsRequest.java b/server/src/main/java/org/opensearch/action/admin/cluster/wlm/QueryGroupStatsRequest.java
index d5a398af3ff85..66bd7df5a1adc 100644
--- a/server/src/main/java/org/opensearch/action/admin/cluster/wlm/QueryGroupStatsRequest.java
+++ b/server/src/main/java/org/opensearch/action/admin/cluster/wlm/QueryGroupStatsRequest.java
@@ -26,7 +26,7 @@ public class QueryGroupStatsRequest extends BaseNodesRequest<QueryGroupStatsRequ
     private final Set<String> queryGroupIds;
     private final Boolean breach;
 
-    protected QueryGroupStatsRequest(StreamInput in) throws IOException {
+    public QueryGroupStatsRequest(StreamInput in) throws IOException {
         super(in);
         this.queryGroupIds = new HashSet<>(Set.of(in.readStringArray()));
         this.breach = in.readOptionalBoolean();
diff --git a/server/src/main/java/org/opensearch/action/admin/cluster/wlm/TransportQueryGroupStatsAction.java b/server/src/main/java/org/opensearch/action/admin/cluster/wlm/TransportQueryGroupStatsAction.java
index cb23312b50df9..583f06d08967f 100644
--- a/server/src/main/java/org/opensearch/action/admin/cluster/wlm/TransportQueryGroupStatsAction.java
+++ b/server/src/main/java/org/opensearch/action/admin/cluster/wlm/TransportQueryGroupStatsAction.java
@@ -11,13 +11,10 @@
 import org.opensearch.action.FailedNodeException;
 import org.opensearch.action.support.ActionFilters;
 import org.opensearch.action.support.nodes.TransportNodesAction;
-import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.cluster.service.ClusterService;
 import org.opensearch.common.inject.Inject;
 import org.opensearch.core.common.io.stream.StreamInput;
-import org.opensearch.core.common.io.stream.StreamOutput;
 import org.opensearch.threadpool.ThreadPool;
-import org.opensearch.transport.TransportRequest;
 import org.opensearch.transport.TransportService;
 import org.opensearch.wlm.QueryGroupService;
 import org.opensearch.wlm.stats.QueryGroupStats;
@@ -33,7 +30,7 @@
 public class TransportQueryGroupStatsAction extends TransportNodesAction<
     QueryGroupStatsRequest,
     QueryGroupStatsResponse,
-    TransportQueryGroupStatsAction.NodeQueryGroupStatsRequest,
+    QueryGroupStatsRequest,
     QueryGroupStats> {
 
     QueryGroupService queryGroupService;
@@ -53,7 +50,7 @@ public TransportQueryGroupStatsAction(
             transportService,
             actionFilters,
             QueryGroupStatsRequest::new,
-            NodeQueryGroupStatsRequest::new,
+            QueryGroupStatsRequest::new,
             ThreadPool.Names.MANAGEMENT,
             QueryGroupStats.class
         );
@@ -70,8 +67,8 @@ protected QueryGroupStatsResponse newResponse(
     }
 
     @Override
-    protected NodeQueryGroupStatsRequest newNodeRequest(QueryGroupStatsRequest request) {
-        return new NodeQueryGroupStatsRequest(request);
+    protected QueryGroupStatsRequest newNodeRequest(QueryGroupStatsRequest request) {
+        return request;
     }
 
     @Override
@@ -80,37 +77,7 @@ protected QueryGroupStats newNodeResponse(StreamInput in) throws IOException {
     }
 
     @Override
-    protected QueryGroupStats nodeOperation(NodeQueryGroupStatsRequest nodeQueryGroupStatsRequest) {
-        QueryGroupStatsRequest request = nodeQueryGroupStatsRequest.request;
-        return queryGroupService.nodeStats(request.getQueryGroupIds(), request.isBreach());
-    }
-
-    /**
-     * Inner QueryGroupStatsRequest
-     *
-     * @opensearch.experimental
-     */
-    public static class NodeQueryGroupStatsRequest extends TransportRequest {
-
-        protected QueryGroupStatsRequest request;
-
-        public NodeQueryGroupStatsRequest(StreamInput in) throws IOException {
-            super(in);
-            request = new QueryGroupStatsRequest(in);
-        }
-
-        NodeQueryGroupStatsRequest(QueryGroupStatsRequest request) {
-            this.request = request;
-        }
-
-        @Override
-        public void writeTo(StreamOutput out) throws IOException {
-            super.writeTo(out);
-            request.writeTo(out);
-        }
-
-        public DiscoveryNode[] getDiscoveryNodes() {
-            return this.request.concreteNodes();
-        }
+    protected QueryGroupStats nodeOperation(QueryGroupStatsRequest queryGroupStatsRequest) {
+        return queryGroupService.nodeStats(queryGroupStatsRequest.getQueryGroupIds(), queryGroupStatsRequest.isBreach());
     }
 }
diff --git a/server/src/test/java/org/opensearch/action/support/nodes/TransportQueryGroupStatsActionTests.java b/server/src/test/java/org/opensearch/action/support/nodes/TransportQueryGroupStatsActionTests.java
index f27bf7f6023ee..9079410983dfd 100644
--- a/server/src/test/java/org/opensearch/action/support/nodes/TransportQueryGroupStatsActionTests.java
+++ b/server/src/test/java/org/opensearch/action/support/nodes/TransportQueryGroupStatsActionTests.java
@@ -10,7 +10,6 @@
 
 import org.opensearch.action.admin.cluster.wlm.QueryGroupStatsRequest;
 import org.opensearch.action.admin.cluster.wlm.TransportQueryGroupStatsAction;
-import org.opensearch.action.admin.cluster.wlm.TransportQueryGroupStatsAction.NodeQueryGroupStatsRequest;
 import org.opensearch.action.support.ActionFilters;
 import org.opensearch.action.support.PlainActionFuture;
 import org.opensearch.common.io.stream.BytesStreamOutput;
@@ -35,16 +34,16 @@ public class TransportQueryGroupStatsActionTests extends TransportNodesActionTes
      */
     public void testQueryGroupStatsActionWithRetentionOfDiscoveryNodesList() {
         QueryGroupStatsRequest request = new QueryGroupStatsRequest();
-        Map<String, List<NodeQueryGroupStatsRequest>> combinedSentRequest = performQueryGroupStatsAction(request);
+        Map<String, List<QueryGroupStatsRequest>> combinedSentRequest = performQueryGroupStatsAction(request);
 
         assertNotNull(combinedSentRequest);
         combinedSentRequest.forEach((node, capturedRequestList) -> {
             assertNotNull(capturedRequestList);
-            capturedRequestList.forEach(sentRequest -> { assertNull(sentRequest.getDiscoveryNodes()); });
+            capturedRequestList.forEach(sentRequest -> { assertNull(sentRequest.concreteNodes()); });
         });
     }
 
-    private Map<String, List<NodeQueryGroupStatsRequest>> performQueryGroupStatsAction(QueryGroupStatsRequest request) {
+    private Map<String, List<QueryGroupStatsRequest>> performQueryGroupStatsAction(QueryGroupStatsRequest request) {
         TransportNodesAction action = new TransportQueryGroupStatsAction(
             THREAD_POOL,
             clusterService,
@@ -55,19 +54,18 @@ private Map<String, List<NodeQueryGroupStatsRequest>> performQueryGroupStatsActi
         PlainActionFuture<QueryGroupStatsRequest> listener = new PlainActionFuture<>();
         action.new AsyncAction(null, request, listener).start();
         Map<String, List<CapturingTransport.CapturedRequest>> capturedRequests = transport.getCapturedRequestsByTargetNodeAndClear();
-        Map<String, List<NodeQueryGroupStatsRequest>> combinedSentRequest = new HashMap<>();
+        Map<String, List<QueryGroupStatsRequest>> combinedSentRequest = new HashMap<>();
 
         capturedRequests.forEach((node, capturedRequestList) -> {
-            List<NodeQueryGroupStatsRequest> sentRequestList = new ArrayList<>();
+            List<QueryGroupStatsRequest> sentRequestList = new ArrayList<>();
 
             capturedRequestList.forEach(preSentRequest -> {
                 BytesStreamOutput out = new BytesStreamOutput();
                 try {
-                    TransportQueryGroupStatsAction.NodeQueryGroupStatsRequest QueryGroupStatsRequestFromCoordinator =
-                        (TransportQueryGroupStatsAction.NodeQueryGroupStatsRequest) preSentRequest.request;
+                    QueryGroupStatsRequest QueryGroupStatsRequestFromCoordinator = (QueryGroupStatsRequest) preSentRequest.request;
                     QueryGroupStatsRequestFromCoordinator.writeTo(out);
                     StreamInput in = out.bytes().streamInput();
-                    NodeQueryGroupStatsRequest QueryGroupStatsRequest = new NodeQueryGroupStatsRequest(in);
+                    QueryGroupStatsRequest QueryGroupStatsRequest = new QueryGroupStatsRequest(in);
                     sentRequestList.add(QueryGroupStatsRequest);
                 } catch (IOException e) {
                     throw new RuntimeException(e);