diff --git a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/resource/memory/InsertNodeMemoryEstimator.java b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/resource/memory/InsertNodeMemoryEstimator.java
index 410ac5376c9cf..c29eb15371ce2 100644
--- a/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/resource/memory/InsertNodeMemoryEstimator.java
+++ b/iotdb-core/datanode/src/main/java/org/apache/iotdb/db/pipe/resource/memory/InsertNodeMemoryEstimator.java
@@ -574,6 +574,10 @@ public static long sizeOfValues(
         RamUsageEstimator.alignObjectSize(
             NUM_BYTES_ARRAY_HEADER + NUM_BYTES_OBJECT_REF * values.length);
     for (int i = 0; i < values.length; i++) {
+      if (measurementSchemas[i] == null || measurementSchemas[i].getType() == null) {
+        size += NUM_BYTES_OBJECT_HEADER;
+        continue;
+      }
       switch (measurementSchemas[i].getType()) {
         case INT64:
         case TIMESTAMP: