diff --git a/client-spark/spark3/src/main/java/org/apache/spark/shuffle/FunctionUtils.java b/client-spark/spark3/src/main/java/org/apache/spark/shuffle/FunctionUtils.java
new file mode 100644
index 0000000000..9ed95e01d2
--- /dev/null
+++ b/client-spark/spark3/src/main/java/org/apache/spark/shuffle/FunctionUtils.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.shuffle;
+
+import scala.Function0;
+
+public class FunctionUtils {
+
+  public static <T> Function0<T> once(Function0<T> f) {
+    return new Function0<T>() {
+      private volatile T value;
+      private volatile boolean computed = false;
+
+      @Override
+      public T apply() {
+        if (!computed) {
+          computed = true;
+          value = f.apply();
+        }
+        return value;
+      }
+    };
+  }
+}
diff --git a/client-spark/spark3/src/main/java/org/apache/spark/shuffle/reader/RssShuffleReader.java b/client-spark/spark3/src/main/java/org/apache/spark/shuffle/reader/RssShuffleReader.java
index 9b176340bc..98586b1bd7 100644
--- a/client-spark/spark3/src/main/java/org/apache/spark/shuffle/reader/RssShuffleReader.java
+++ b/client-spark/spark3/src/main/java/org/apache/spark/shuffle/reader/RssShuffleReader.java
@@ -39,6 +39,7 @@
 import org.apache.spark.TaskContext;
 import org.apache.spark.executor.ShuffleReadMetrics;
 import org.apache.spark.serializer.Serializer;
+import org.apache.spark.shuffle.FunctionUtils;
 import org.apache.spark.shuffle.RssShuffleHandle;
 import org.apache.spark.shuffle.ShuffleReader;
 import org.apache.spark.util.CompletionIterator;
@@ -284,10 +285,11 @@ class MultiPartitionIterator<K, C> extends AbstractIterator<Product2<K, C>> {
         CompletionIterator<Product2<K, C>, RssShuffleDataIterator<K, C>> completionIterator =
             CompletionIterator$.MODULE$.apply(
                 iterator,
-                () -> {
-                  context.taskMetrics().mergeShuffleReadMetrics();
-                  return iterator.cleanup();
-                });
+                FunctionUtils.once(
+                    () -> {
+                      context.taskMetrics().mergeShuffleReadMetrics();
+                      return iterator.cleanup();
+                    }));
         iterators.add(completionIterator);
       }
       iterator = iterators.iterator();
diff --git a/client-spark/spark3/src/test/java/org/apache/spark/shuffle/FunctionUtilsTests.java b/client-spark/spark3/src/test/java/org/apache/spark/shuffle/FunctionUtilsTests.java
new file mode 100644
index 0000000000..7640f504e8
--- /dev/null
+++ b/client-spark/spark3/src/test/java/org/apache/spark/shuffle/FunctionUtilsTests.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.shuffle;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import scala.Function0;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class FunctionUtilsTests {
+
+  @Test
+  public void testOnceFunction0() {
+    AtomicInteger count = new AtomicInteger(0);
+    Function0<Integer> once = FunctionUtils.once(count::incrementAndGet);
+    once.apply();
+    once.apply();
+    once.apply();
+    assertEquals(1, count.get());
+  }
+}