diff --git a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptor.java b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptor.java
index 87f5c88d3eb1..5ac49f491b9d 100644
--- a/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptor.java
+++ b/java-bigtable/google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptor.java
@@ -20,6 +20,7 @@
 import com.google.api.gax.batching.BatchResource;
 import com.google.api.gax.batching.BatchingDescriptor;
 import com.google.api.gax.batching.BatchingRequestBuilder;
+import com.google.bigtable.v2.MutateRowsRequest;
 import com.google.cloud.bigtable.data.v2.models.BulkMutation;
 import com.google.cloud.bigtable.data.v2.models.MutateRowsException;
 import com.google.cloud.bigtable.data.v2.models.MutateRowsException.FailedMutation;
@@ -101,8 +102,8 @@ public long countBytes(RowMutationEntry entry) {
 
   @Override
   public BatchResource createResource(RowMutationEntry element) {
-    long byteCount = countBytes(element);
-    return MutateRowsBatchResource.create(1, byteCount, element.toProto().getMutationsCount());
+    MutateRowsRequest.Entry proto = element.toProto();
+    return MutateRowsBatchResource.create(1, proto.getSerializedSize(), proto.getMutationsCount());
   }
 
   @Override
diff --git a/java-bigtable/google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptorTest.java b/java-bigtable/google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptorTest.java
index 11658d8792bd..a3115fab7a5b 100644
--- a/java-bigtable/google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptorTest.java
+++ b/java-bigtable/google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/data/v2/stub/mutaterows/MutateRowsBatchingDescriptorTest.java
@@ -27,6 +27,7 @@
 import com.google.api.gax.rpc.DeadlineExceededException;
 import com.google.api.gax.rpc.InternalException;
 import com.google.api.gax.rpc.UnavailableException;
+import com.google.bigtable.v2.MutateRowsRequest;
 import com.google.cloud.bigtable.data.v2.internal.RequestContext;
 import com.google.cloud.bigtable.data.v2.models.BulkMutation;
 import com.google.cloud.bigtable.data.v2.models.MutateRowsException;
@@ -64,6 +65,34 @@ public void countBytesTest() {
     assertThat(underTest.countBytes(request)).isEqualTo(bytes);
   }
 
+  @Test
+  public void createResourceTest() {
+    RowMutationEntry request =
+        RowMutationEntry.create(ROW_KEY)
+            .setCell(FAMILY, QUALIFIER, VALUE)
+            .setCell(FAMILY, QUALIFIER, "another-value")
+            .deleteFamily(FAMILY);
+    MutateRowsRequest.Entry proto = request.toProto();
+
+    MutateRowsBatchingDescriptor underTest = new MutateRowsBatchingDescriptor();
+    BatchResource resource = underTest.createResource(request);
+
+    assertThat(resource.getElementCount()).isEqualTo(1);
+    assertThat(resource.getByteCount()).isEqualTo(proto.getSerializedSize());
+    assertThat(((MutateRowsBatchResource) resource).getMutationCount())
+        .isEqualTo(proto.getMutationsCount());
+  }
+
+  @Test
+  public void createEmptyResourceTest() {
+    MutateRowsBatchingDescriptor underTest = new MutateRowsBatchingDescriptor();
+    BatchResource resource = underTest.createEmptyResource();
+
+    assertThat(resource.getElementCount()).isEqualTo(0);
+    assertThat(resource.getByteCount()).isEqualTo(0);
+    assertThat(((MutateRowsBatchResource) resource).getMutationCount()).isEqualTo(0);
+  }
+
   @Test
   public void requestBuilderTest() {
     MutateRowsBatchingDescriptor underTest = new MutateRowsBatchingDescriptor();