diff --git a/include/libs/nodes/nodes.h b/include/libs/nodes/nodes.h
index 9c2fdf587b16e3148ba99ebe75dbe102c97e38a2..6500d3d1831e817c497406e574b721594e63e209 100644
--- a/include/libs/nodes/nodes.h
+++ b/include/libs/nodes/nodes.h
@@ -320,6 +320,9 @@ int32_t     nodesStringToNode(const char* pStr, SNode** pNode);
 int32_t nodesListToString(const SNodeList* pList, bool format, char** pStr, int32_t* pLen);
 int32_t nodesStringToList(const char* pStr, SNodeList** pList);
 
+int32_t nodesNodeToMsg(const SNode* pNode, char** pMsg, int32_t* pLen);
+int32_t nodesMsgToNode(const char* pStr, int32_t len, SNode** pNode);
+
 int32_t nodesNodeToSQL(SNode* pNode, char* buf, int32_t bufSize, int32_t* len);
 char*   nodesGetNameFromColumnNode(SNode* pNode);
 int32_t nodesGetOutputNumFromSlotList(SNodeList* pSlots);
diff --git a/source/libs/nodes/src/nodesCodeFuncs.c b/source/libs/nodes/src/nodesCodeFuncs.c
index 8976daadbdada2365dbb2e3bf2af4f807c4ac26f..a41462e3fd879a73baeb37ee829724fda560719c 100644
--- a/source/libs/nodes/src/nodesCodeFuncs.c
+++ b/source/libs/nodes/src/nodesCodeFuncs.c
@@ -362,18 +362,14 @@ static int32_t jsonToTableComInfo(const SJson* pJson, void* pObj) {
 
   int32_t code;
   tjsonGetNumberValue(pJson, jkTableComInfoNumOfTags, pNode->numOfTags, code);
-  ;
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableComInfoPrecision, pNode->precision, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableComInfoNumOfColumns, pNode->numOfColumns, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableComInfoRowSize, pNode->rowSize, code);
-    ;
   }
 
   return code;
@@ -406,14 +402,11 @@ static int32_t jsonToSchema(const SJson* pJson, void* pObj) {
 
   int32_t code;
   tjsonGetNumberValue(pJson, jkSchemaType, pNode->type, code);
-  ;
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkSchemaColId, pNode->colId, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkSchemaBytes, pNode->bytes, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetStringValue(pJson, jkSchemaName, pNode->name);
@@ -466,26 +459,20 @@ static int32_t jsonToTableMeta(const SJson* pJson, void* pObj) {
 
   int32_t code;
   tjsonGetNumberValue(pJson, jkTableMetaVgId, pNode->vgId, code);
-  ;
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableMetaTableType, pNode->tableType, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableMetaUid, pNode->uid, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableMetaSuid, pNode->suid, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableMetaSversion, pNode->sversion, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkTableMetaTversion, pNode->tversion, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonToObject(pJson, jkTableMetaComInfo, jsonToTableComInfo, &pNode->tableInfo);
@@ -926,7 +913,6 @@ static int32_t jsonToLogicFillNode(const SJson* pJson, void* pObj) {
   int32_t code = jsonToLogicPlanNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkFillLogicPlanMode, pNode->mode, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkFillLogicPlanWStartTs, &pNode->pWStartTs);
@@ -2815,7 +2801,6 @@ static int32_t jsonToColumnNode(const SJson* pJson, void* pObj) {
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkColumnColType, pNode->colType, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = tjsonGetStringValue(pJson, jkColumnDbName, pNode->dbName);
@@ -3118,7 +3103,6 @@ static int32_t jsonToOperatorNode(const SJson* pJson, void* pObj) {
   int32_t code = jsonToExprNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkOperatorType, pNode->opType, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkOperatorLeft, &pNode->pLeft);
@@ -3153,7 +3137,6 @@ static int32_t jsonToLogicConditionNode(const SJson* pJson, void* pObj) {
   int32_t code = jsonToExprNode(pJson, pObj);
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkLogicCondType, pNode->condType, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeList(pJson, jkLogicCondParameters, &pNode->pParameterList);
@@ -3442,11 +3425,9 @@ static int32_t jsonToOrderByExprNode(const SJson* pJson, void* pObj) {
   int32_t code = jsonToNodeObject(pJson, jkOrderByExprExpr, &pNode->pExpr);
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkOrderByExprOrder, pNode->order, code);
-    ;
   }
   if (TSDB_CODE_SUCCESS == code) {
     tjsonGetNumberValue(pJson, jkOrderByExprNullOrder, pNode->nullOrder, code);
-    ;
   }
 
   return code;
@@ -3624,7 +3605,6 @@ static int32_t jsonToFillNode(const SJson* pJson, void* pObj) {
 
   int32_t code;
   tjsonGetNumberValue(pJson, jkFillMode, pNode->mode, code);
-  ;
   if (TSDB_CODE_SUCCESS == code) {
     code = jsonToNodeObject(pJson, jkFillValues, &pNode->pValues);
   }
diff --git a/source/libs/nodes/src/nodesMsgFuncs.c b/source/libs/nodes/src/nodesMsgFuncs.c
new file mode 100644
index 0000000000000000000000000000000000000000..f5d5bd60cccb2d94dc3186046c3877e8e815be6c
--- /dev/null
+++ b/source/libs/nodes/src/nodesMsgFuncs.c
@@ -0,0 +1,498 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "nodesUtil.h"
+#include "plannodes.h"
+
+#define NODES_MSG_DEFAULT_LEN 1024
+
+#define tlvDecodeEnum(pTlv, value) tlvDecodeImpl(pTlv, &(value), sizeof(value))
+
+typedef struct STlv {
+  int16_t type;
+  int16_t len;
+  char    value[0];
+} STlv;
+
+typedef struct STlvEncoder {
+  int32_t allocSize;
+  int32_t offset;
+  char*   pBuf;
+} STlvEncoder;
+
+typedef struct STlvDecoder {
+  int32_t     bufSize;
+  int32_t     offset;
+  const char* pBuf;
+} STlvDecoder;
+
+typedef int32_t (*FToMsg)(const void* pObj, STlvEncoder* pEncoder);
+typedef int32_t (*FToObject)(STlvDecoder* pDecoder, void* pObj);
+typedef int32_t (*FSetObject)(STlv* pTlv, void* pObj);
+
+static int32_t nodeToMsg(const void* pObj, STlvEncoder* pEncoder);
+static int32_t nodeListToMsg(const void* pObj, STlvEncoder* pEncoder);
+
+static int32_t initTlvEncoder(STlvEncoder* pEncoder) {
+  pEncoder->allocSize = NODES_MSG_DEFAULT_LEN;
+  pEncoder->offset = 0;
+  pEncoder->pBuf = taosMemoryMalloc(pEncoder->allocSize);
+  return NULL == pEncoder->pBuf ? TSDB_CODE_OUT_OF_MEMORY : TSDB_CODE_SUCCESS;
+}
+
+static void clearTlvEncoder(STlvEncoder* pEncoder) { taosMemoryFree(pEncoder->pBuf); }
+
+static void endTlvEncode(STlvEncoder* pEncoder, char** pMsg, int32_t* pLen) {
+  *pMsg = pEncoder->pBuf;
+  pEncoder->pBuf = NULL;
+  *pLen = pEncoder->offset;
+}
+
+static int32_t tlvEncodeImpl(STlvEncoder* pEncoder, int16_t type, const void* pValue, int16_t len) {
+  if (pEncoder->offset + len > pEncoder->allocSize) {
+    void* pNewBuf = taosMemoryRealloc(pEncoder->pBuf, pEncoder->allocSize * 2);
+    if (NULL == pNewBuf) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+    pEncoder->pBuf = pNewBuf;
+    pEncoder->allocSize = pEncoder->allocSize * 2;
+  }
+  STlv* pTlv = (STlv*)(pEncoder->pBuf + pEncoder->offset);
+  pTlv->type = type;
+  pTlv->len = len;
+  memcpy(pTlv->value, pValue, len);
+  pEncoder->offset += sizeof(STlv) + pTlv->len;
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t tlvEncodeI8(STlvEncoder* pEncoder, int16_t type, int8_t value) {
+  return tlvEncodeImpl(pEncoder, type, &value, sizeof(value));
+}
+
+static int32_t tlvEncodeI16(STlvEncoder* pEncoder, int16_t type, int16_t value) {
+  return tlvEncodeImpl(pEncoder, type, &value, sizeof(value));
+}
+
+static int32_t tlvEncodeI32(STlvEncoder* pEncoder, int16_t type, int32_t value) {
+  return tlvEncodeImpl(pEncoder, type, &value, sizeof(value));
+}
+
+static int32_t tlvEncodeU8(STlvEncoder* pEncoder, int16_t type, uint8_t value) {
+  return tlvEncodeImpl(pEncoder, type, &value, sizeof(value));
+}
+
+static int32_t tlvEncodeU16(STlvEncoder* pEncoder, int16_t type, uint16_t value) {
+  return tlvEncodeImpl(pEncoder, type, &value, sizeof(value));
+}
+
+static int32_t tlvEncodeU64(STlvEncoder* pEncoder, int16_t type, uint64_t value) {
+  return tlvEncodeImpl(pEncoder, type, &value, sizeof(value));
+}
+
+static int32_t tlvEncodeCStr(STlvEncoder* pEncoder, int16_t type, const char* pValue) {
+  return tlvEncodeImpl(pEncoder, type, pValue, strlen(pValue));
+}
+
+static int32_t tlvEncodeObjArray(STlvEncoder* pEncoder, int16_t type, FToMsg func, const void* pArray, int32_t itemSize,
+                                 int32_t num) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  if (num > 0) {
+    int32_t start = pEncoder->offset;
+    pEncoder->offset += sizeof(STlv);
+    for (size_t i = 0; TSDB_CODE_SUCCESS == code && i < num; ++i) {
+      code = func(pArray + i * itemSize, pEncoder);
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      STlv* pTlv = (STlv*)(pEncoder->pBuf + start);
+      pTlv->type = type;
+      pTlv->len = pEncoder->offset - start - sizeof(STlv);
+    }
+  }
+  return code;
+}
+
+static int32_t tlvEncodeObj(STlvEncoder* pEncoder, int16_t type, FToMsg func, const void* pObj) {
+  int32_t start = pEncoder->offset;
+  pEncoder->offset += sizeof(STlv);
+  int32_t code = func(pObj, pEncoder);
+  if (TSDB_CODE_SUCCESS == code) {
+    STlv* pTlv = (STlv*)(pEncoder->pBuf + start);
+    pTlv->type = type;
+    pTlv->len = pEncoder->offset - start - sizeof(STlv);
+  }
+  return code;
+}
+
+static int32_t tlvGetNextTlv(STlvDecoder* pDecoder, STlv** pTlv) {
+  *pTlv = (STlv*)(pDecoder->pBuf + pDecoder->offset);
+  if ((*pTlv)->len + pDecoder->offset > pDecoder->bufSize) {
+    return TSDB_CODE_FAILED;
+  }
+  pDecoder->offset += (*pTlv)->len;
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t tlvDecodeImpl(STlv* pTlv, void* pValue, int16_t len) {
+  if (pTlv->len != len) {
+    return TSDB_CODE_FAILED;
+  }
+  memcpy(pValue, pTlv->value, len);
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t tlvDecodeI8(STlv* pTlv, int8_t* pValue) { return tlvDecodeImpl(pTlv, pValue, sizeof(*pValue)); }
+
+static int32_t tlvDecodeI16(STlv* pTlv, int16_t* pValue) { return tlvDecodeImpl(pTlv, pValue, sizeof(*pValue)); }
+
+static int32_t tlvDecodeU64(STlv* pTlv, uint64_t* pValue) { return tlvDecodeImpl(pTlv, pValue, sizeof(*pValue)); }
+
+static int32_t tlvDecodeObjFromTlv(STlv* pTlv, FToObject func, void* pObj) {
+  STlvDecoder decoder = {.bufSize = pTlv->len, .offset = 0, .pBuf = pTlv->value};
+  return func(&decoder, pObj);
+}
+
+static int32_t tlvDecodeObj(STlvDecoder* pDecoder, FToObject func, void* pObj) {
+  STlv*   pTlv = NULL;
+  int32_t code = tlvGetNextTlv(pDecoder, &pTlv);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvDecodeObjFromTlv(pTlv, func, pObj);
+  }
+  return code;
+}
+
+static int32_t tlvDecodeNodeObj(STlvDecoder* pDecoder, FToObject func, void** pObj) {
+  STlv*   pTlv = NULL;
+  int32_t code = tlvGetNextTlv(pDecoder, &pTlv);
+  if (TSDB_CODE_SUCCESS == code) {
+    *pObj = nodesMakeNode(pTlv->type);
+    if (NULL == *pObj) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
+    STlvDecoder decoder = {.bufSize = pTlv->len, .offset = 0, .pBuf = pTlv->value};
+    code = func(&decoder, *pObj);
+  }
+  return code;
+}
+
+static int32_t msgToObject(STlvDecoder* pDecoder, FSetObject func, void* pObj) {
+  STlv*   pTlv;
+  int32_t code = tlvGetNextTlv(pDecoder, &pTlv);
+  while (TSDB_CODE_SUCCESS == code && pTlv->len > 0) {
+    code = func(pTlv, pObj);
+  }
+  return code;
+}
+
+enum { DATA_TYPE_CODE_TYPE = 1, DATA_TYPE_CODE_PRECISION, DATA_TYPE_CODE_SCALE, DATA_TYPE_CODE_BYTES };
+
+static int32_t dataTypeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SDataType* pNode = (const SDataType*)pObj;
+
+  int32_t code = tlvEncodeI8(pEncoder, DATA_TYPE_CODE_TYPE, pNode->type);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU8(pEncoder, DATA_TYPE_CODE_PRECISION, pNode->precision);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU8(pEncoder, DATA_TYPE_CODE_SCALE, pNode->scale);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, DATA_TYPE_CODE_BYTES, pNode->bytes);
+  }
+
+  return code;
+}
+
+enum { EXPR_CODE_RES_TYPE = 1 };
+
+static int32_t exprNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SExprNode* pNode = (const SExprNode*)pObj;
+  return tlvEncodeObj(pEncoder, EXPR_CODE_RES_TYPE, dataTypeToMsg, &pNode->resType);
+}
+
+static int32_t msgToExprNode(STlvDecoder* pDecoder, void* pObj) {
+  // todo
+  return TSDB_CODE_SUCCESS;
+}
+
+enum {
+  COLUMN_CODE_EXPR_BASE = 1,
+  COLUMN_CODE_TABLE_ID,
+  COLUMN_CODE_TABLE_TYPE,
+  COLUMN_CODE_COLUMN_ID,
+  COLUMN_CODE_COLUMN_TYPE,
+  COLUMN_CODE_DATABLOCK_ID,
+  COLUMN_CODE_SLOT_ID
+};
+
+static int32_t columnNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SColumnNode* pNode = (const SColumnNode*)pObj;
+
+  int32_t code = tlvEncodeObj(pEncoder, COLUMN_CODE_EXPR_BASE, exprNodeToMsg, pNode);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU64(pEncoder, COLUMN_CODE_TABLE_ID, pNode->tableId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI8(pEncoder, COLUMN_CODE_TABLE_TYPE, pNode->tableType);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI16(pEncoder, COLUMN_CODE_COLUMN_ID, pNode->colId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI8(pEncoder, COLUMN_CODE_COLUMN_TYPE, pNode->colType);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI16(pEncoder, COLUMN_CODE_DATABLOCK_ID, pNode->dataBlockId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI16(pEncoder, COLUMN_CODE_SLOT_ID, pNode->slotId);
+  }
+
+  return code;
+}
+
+static int32_t setColumnNodeFromTlv(STlv* pTlv, void* pObj) {
+  SColumnNode* pNode = (SColumnNode*)pObj;
+
+  switch (pTlv->type) {
+    case COLUMN_CODE_EXPR_BASE:
+      return tlvDecodeObjFromTlv(pTlv, msgToExprNode, &pNode->node);
+    case COLUMN_CODE_TABLE_ID:
+      return tlvDecodeU64(pTlv, &pNode->tableId);
+    case COLUMN_CODE_TABLE_TYPE:
+      return tlvDecodeI8(pTlv, &pNode->tableType);
+    case COLUMN_CODE_COLUMN_ID:
+      return tlvDecodeI16(pTlv, &pNode->colId);
+    case COLUMN_CODE_COLUMN_TYPE:
+      return tlvDecodeEnum(pTlv, pNode->colType);
+    case COLUMN_CODE_DATABLOCK_ID:
+      return tlvDecodeI16(pTlv, &pNode->dataBlockId);
+    case COLUMN_CODE_SLOT_ID:
+      return tlvDecodeI16(pTlv, &pNode->slotId);
+    default:
+      break;
+  }
+
+  return TSDB_CODE_FAILED;
+}
+
+static int32_t msgToColumnNode(STlvDecoder* pDecoder, void* pObj) {
+  return msgToObject(pDecoder, setColumnNodeFromTlv, pObj);
+}
+
+enum { SUBPLAN_ID_CODE_QUERY_ID = 1, SUBPLAN_ID_CODE_GROUP_ID, SUBPLAN_ID_CODE_SUBPLAN_ID };
+
+static int32_t subplanIdToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SSubplanId* pNode = (const SSubplanId*)pObj;
+
+  int32_t code = tlvEncodeU64(pEncoder, SUBPLAN_ID_CODE_QUERY_ID, pNode->queryId);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, SUBPLAN_ID_CODE_GROUP_ID, pNode->groupId);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, SUBPLAN_ID_CODE_SUBPLAN_ID, pNode->subplanId);
+  }
+
+  return code;
+}
+
+enum { EP_CODE_FQDN = 1, EP_CODE_port };
+
+static int32_t epToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SEp* pNode = (const SEp*)pObj;
+
+  int32_t code = tlvEncodeCStr(pEncoder, EP_CODE_FQDN, pNode->fqdn);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeU16(pEncoder, EP_CODE_port, pNode->port);
+  }
+
+  return code;
+}
+
+enum {
+  QUERY_NODE_ADDR_CODE_NODE_ID = 1,
+  QUERY_NODE_ADDR_CODE_IN_USE,
+  QUERY_NODE_ADDR_CODE_NUM_OF_EPS,
+  QUERY_NODE_ADDR_CODE_EPS
+};
+
+static int32_t queryNodeAddrToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SQueryNodeAddr* pNode = (const SQueryNodeAddr*)pObj;
+
+  int32_t code = tlvEncodeI32(pEncoder, QUERY_NODE_ADDR_CODE_NODE_ID, pNode->nodeId);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, QUERY_NODE_ADDR_CODE_IN_USE, pNode->epSet.inUse);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, QUERY_NODE_ADDR_CODE_NUM_OF_EPS, pNode->epSet.numOfEps);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObjArray(pEncoder, QUERY_NODE_ADDR_CODE_EPS, epToMsg, pNode->epSet.eps, sizeof(SEp),
+                             pNode->epSet.numOfEps);
+  }
+
+  return code;
+}
+
+enum {
+  SUBPLAN_CODE_SUBPLAN_ID = 1,
+  SUBPLAN_CODE_SUBPLAN_TYPE,
+  SUBPLAN_CODE_MSG_TYPE,
+  SUBPLAN_CODE_LEVEL,
+  SUBPLAN_CODE_DBFNAME,
+  SUBPLAN_CODE_USER,
+  SUBPLAN_CODE_EXECNODE,
+  SUBPLAN_CODE_ROOT_NODE,
+  SUBPLAN_CODE_DATA_SINK,
+  SUBPLAN_CODE_TAG_COND,
+  SUBPLAN_CODE_TAG_INDEX_COND
+};
+
+static int32_t subplanToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SSubplan* pNode = (const SSubplan*)pObj;
+
+  int32_t code = tlvEncodeObj(pEncoder, SUBPLAN_CODE_SUBPLAN_ID, subplanIdToMsg, &pNode->id);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI8(pEncoder, SUBPLAN_CODE_SUBPLAN_TYPE, pNode->subplanType);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, SUBPLAN_CODE_MSG_TYPE, pNode->msgType);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, SUBPLAN_CODE_LEVEL, pNode->level);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeCStr(pEncoder, SUBPLAN_CODE_DBFNAME, pNode->dbFName);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeCStr(pEncoder, SUBPLAN_CODE_USER, pNode->user);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, SUBPLAN_CODE_EXECNODE, queryNodeAddrToMsg, &pNode->execNode);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, SUBPLAN_CODE_ROOT_NODE, nodeToMsg, pNode->pNode);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, SUBPLAN_CODE_DATA_SINK, nodeToMsg, pNode->pDataSink);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, SUBPLAN_CODE_TAG_COND, nodeToMsg, pNode->pTagCond);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, SUBPLAN_CODE_TAG_INDEX_COND, nodeToMsg, pNode->pTagIndexCond);
+  }
+
+  return code;
+}
+
+enum { QUERY_PLAN_CODE_QUERY_ID = 1, QUERY_PLAN_CODE_NUM_OF_SUBPLANS, QUERY_PLAN_CODE_SUBPLANS };
+
+static int32_t queryPlanToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SQueryPlan* pNode = (const SQueryPlan*)pObj;
+
+  int32_t code = tlvEncodeU64(pEncoder, QUERY_PLAN_CODE_QUERY_ID, pNode->queryId);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeI32(pEncoder, QUERY_PLAN_CODE_NUM_OF_SUBPLANS, pNode->numOfSubplans);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, QUERY_PLAN_CODE_SUBPLANS, nodeListToMsg, pNode->pSubplans);
+  }
+
+  return code;
+}
+
+static int32_t specificNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  switch (nodeType(pObj)) {
+    case QUERY_NODE_COLUMN:
+      return columnNodeToMsg(pObj, pEncoder);
+    case QUERY_NODE_PHYSICAL_SUBPLAN:
+      return subplanToMsg(pObj, pEncoder);
+    case QUERY_NODE_PHYSICAL_PLAN:
+      return queryPlanToMsg(pObj, pEncoder);
+    default:
+      break;
+  };
+  nodesWarn("specificNodeToMsg unknown node = %s", nodesNodeName(nodeType(pObj)));
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t msgToSpecificNode(STlvDecoder* pDecoder, void* pObj) {
+  switch (nodeType(pObj)) {
+    case QUERY_NODE_COLUMN:
+      return msgToColumnNode(pDecoder, pObj);
+    default:
+      break;
+  };
+  nodesWarn("msgToSpecificNode unknown node = %s", nodesNodeName(nodeType(pObj)));
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t nodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  return tlvEncodeObj(pEncoder, nodeType(pObj), specificNodeToMsg, pObj);
+}
+
+static int32_t msgToNode(STlvDecoder* pDecoder, void** pObj) {
+  return tlvDecodeNodeObj(pDecoder, msgToSpecificNode, pObj);
+}
+
+static int32_t nodeListToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SNodeList* pList = (const SNodeList*)pObj;
+
+  SNode* pNode = NULL;
+  FOREACH(pNode, pList) {
+    int32_t code = nodeToMsg(pNode, pEncoder);
+    if (TSDB_CODE_SUCCESS != code) {
+      return code;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t nodesNodeToMsg(const SNode* pNode, char** pMsg, int32_t* pLen) {
+  if (NULL == pNode || NULL == pMsg || NULL == pLen) {
+    terrno = TSDB_CODE_FAILED;
+    return TSDB_CODE_FAILED;
+  }
+
+  STlvEncoder encoder;
+  int32_t     code = initTlvEncoder(&encoder);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = nodeToMsg(pNode, &encoder);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    endTlvEncode(&encoder, pMsg, pLen);
+  }
+  clearTlvEncoder(&encoder);
+
+  terrno = code;
+  return code;
+}
+
+int32_t nodesMsgToNode(const char* pMsg, int32_t len, SNode** pNode) {
+  if (NULL == pMsg || NULL == pNode) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  STlvDecoder decoder = {.bufSize = len, .offset = 0, .pBuf = pMsg};
+  int32_t     code = msgToNode(&decoder, (void**)pNode);
+  if (TSDB_CODE_SUCCESS != code) {
+    nodesDestroyNode(*pNode);
+    *pNode = NULL;
+  }
+
+  terrno = code;
+  return code;
+}