diff --git a/source/libs/function/inc/tudf.h b/source/libs/function/inc/tudf.h
index fa009833c6..45e4b2a0f5 100644
--- a/source/libs/function/inc/tudf.h
+++ b/source/libs/function/inc/tudf.h
@@ -125,6 +125,11 @@ int32_t teardownUdf(UdfHandle handle);
 typedef int32_t (*TUdfSetupFunc)();
 typedef int32_t (*TUdfTeardownFunc)();
 
+//TODO: another way to manage memory is provide api for UDF to add data to SUdfColumnData and UDF framework will allocate memory.
+// then UDF framework will free the memory
+//typedef int32_t addFixedLengthColumnData(SColumnData *columnData, int rowIndex, bool isNull, int32_t colBytes, char* data);
+//typedef int32_t addVariableLengthColumnData(SColumnData *columnData, int rowIndex, bool isNull, int32_t dataLen, char * data);
+
 typedef int32_t (*TUdfFreeUdfColumnDataFunc)(SUdfColumnData* columnData);
 
 typedef int32_t (*TUdfScalarProcFunc)(SUdfDataBlock block, SUdfColumnData *resultData);
diff --git a/source/libs/function/inc/tudfInt.h b/source/libs/function/inc/tudfInt.h
index 20fc98a08a..7890eef8be 100644
--- a/source/libs/function/inc/tudfInt.h
+++ b/source/libs/function/inc/tudfInt.h
@@ -51,6 +51,7 @@ typedef struct SUdfCallRequest {
 
   SUdfDataBlock block;
   SUdfInterBuf interBuf;
+  SUdfInterBuf interBuf2;
   bool initFirst;
 } SUdfCallRequest;
 
diff --git a/source/libs/function/src/tudf.c b/source/libs/function/src/tudf.c
index 96c3756233..283dfd06bb 100644
--- a/source/libs/function/src/tudf.c
+++ b/source/libs/function/src/tudf.c
@@ -372,7 +372,6 @@ int32_t serializeUdfInterBuf(SUdfInterBuf *state, char *pBuf) {
 
   *(int32_t*)pBuf = state->bufLen;
   pBuf += sizeof(int32_t);
-
   memcpy(pBuf, state->buf, state->bufLen);
   pBuf += state->bufLen;
 
@@ -463,6 +462,8 @@ int32_t serializeUdfCallRequest(SUdfCallRequest *call, char *buf) {
   buf += l;
   l = serializeUdfInterBuf(&call->interBuf, buf);
   buf += l;
+  l = serializeUdfInterBuf(&call->interBuf2, buf);
+  buf += l;
 
   *(bool*)buf = call->initFirst;
   buf += sizeof(bool);
@@ -1253,8 +1254,6 @@ int32_t callUdf(UdfHandle handle, int8_t callType, SUdfDataBlock *input, SUdfInt
     }
   }
 
-
-
   udfcRunUvTask(task, UV_TASK_REQ_RSP);
 
   SUdfCallResponse *rsp = &task->_call.rsp;
diff --git a/source/libs/function/src/udfd.c b/source/libs/function/src/udfd.c
index 27b99625fe..a1996133e7 100644
--- a/source/libs/function/src/udfd.c
+++ b/source/libs/function/src/udfd.c
@@ -393,6 +393,7 @@ int32_t closeUdfdClientRpc(SUdfdContext *ctx) {
 
   return 0;
 }
+
 int main() {
     debugPrint("libuv version: %x", UV_VERSION_HEX);