diff --git a/fe/spark-dpp/src/main/java/org/apache/doris/load/loadv2/dpp/DppUtils.java b/fe/spark-dpp/src/main/java/org/apache/doris/load/loadv2/dpp/DppUtils.java
index a019338bc33233..1249cac993db17 100644
--- a/fe/spark-dpp/src/main/java/org/apache/doris/load/loadv2/dpp/DppUtils.java
+++ b/fe/spark-dpp/src/main/java/org/apache/doris/load/loadv2/dpp/DppUtils.java
@@ -182,7 +182,10 @@ public static ByteBuffer getHashValue(Object o, DataType type) {
             byte value = (byte) (b ? 1 : 0);
             buffer.put(value);
         }
-        buffer.flip();
+        // do not flip buffer when the buffer was created by wrap()
+        if (!type.equals(DataTypes.StringType)) {
+            buffer.flip();
+        }
         return buffer;
     }