diff --git a/include/libs/nodes/nodes.h b/include/libs/nodes/nodes.h
index 8fb52ceb858d01919ab8a9d5b9abed9b6b5b7231..3a9dd3c713b09d627243e76884a5e5db887b3116 100644
--- a/include/libs/nodes/nodes.h
+++ b/include/libs/nodes/nodes.h
@@ -101,6 +101,7 @@ typedef enum ENodeType {
   QUERY_NODE_LOGIC_PLAN_PROJECT,
   QUERY_NODE_LOGIC_PLAN_VNODE_MODIF,
   QUERY_NODE_LOGIC_PLAN_EXCHANGE,
+  QUERY_NODE_LOGIC_PLAN_WINDOW,
   QUERY_NODE_LOGIC_SUBPLAN,
   QUERY_NODE_LOGIC_PLAN,
 
@@ -115,6 +116,7 @@ typedef enum ENodeType {
   QUERY_NODE_PHYSICAL_PLAN_AGG,
   QUERY_NODE_PHYSICAL_PLAN_EXCHANGE,
   QUERY_NODE_PHYSICAL_PLAN_SORT,
+  QUERY_NODE_PHYSICAL_PLAN_INTERVAL,
   QUERY_NODE_PHYSICAL_PLAN_DISPATCH,
   QUERY_NODE_PHYSICAL_PLAN_INSERT,
   QUERY_NODE_PHYSICAL_SUBPLAN,
diff --git a/include/libs/nodes/plannodes.h b/include/libs/nodes/plannodes.h
index 717baf24cdb261cda7849d8e0c0cd8b174084ca9..c028c4a1b99663abaa80b4c8ab4a8a4b4d1b1f48 100644
--- a/include/libs/nodes/plannodes.h
+++ b/include/libs/nodes/plannodes.h
@@ -80,6 +80,22 @@ typedef struct SExchangeLogicNode {
   int32_t srcGroupId;
 } SExchangeLogicNode;
 
+typedef enum EWindowType {
+  WINDOW_TYPE_INTERVAL = 1,
+  WINDOW_TYPE_SESSION,
+  WINDOW_TYPE_STATE
+} EWindowType;
+
+typedef struct SWindowLogicNode {
+  SLogicNode node;
+  EWindowType winType;
+  SNodeList* pFuncs;
+  int64_t interval;
+  int64_t offset;
+  int64_t sliding;
+  SFillNode* pFill;
+} SWindowLogicNode;
+
 typedef enum ESubplanType {
   SUBPLAN_TYPE_MERGE = 1,
   SUBPLAN_TYPE_PARTIAL,
@@ -191,6 +207,16 @@ typedef struct SExchangePhysiNode {
   SNodeList* pSrcEndPoints;  // element is SDownstreamSource, scheduler fill by calling qSetSuplanExecutionNode
 } SExchangePhysiNode;
 
+typedef struct SIntervalPhysiNode {
+  SPhysiNode node;
+  SNodeList* pExprs;   // these are expression list of parameter expression of function
+  SNodeList* pFuncs;
+  int64_t interval;
+  int64_t offset;
+  int64_t sliding;
+  SFillNode* pFill;
+} SIntervalPhysiNode;
+
 typedef struct SDataSinkNode {
   ENodeType type;
   SDataBlockDescNode* pInputDataBlockDesc;
diff --git a/include/libs/transport/trpc.h b/include/libs/transport/trpc.h
index fdc9368b76e989791453813581327e416007bc3c..8dfd736df6f3984f823b73d2703f154f68803afc 100644
--- a/include/libs/transport/trpc.h
+++ b/include/libs/transport/trpc.h
@@ -71,6 +71,10 @@ typedef struct SRpcInit {
   // call back to keep conn or not
   bool (*pfp)(void *parent, tmsg_t msgType);
 
+  // to support Send messages multiple times on a link  
+  // 
+  void* (*mfp)(void *parent, tmsg_t msgType);
+
   void *parent;
 } SRpcInit;
 
@@ -89,6 +93,9 @@ void    rpcSendRecv(void *shandle, SEpSet *pEpSet, SRpcMsg *pReq, SRpcMsg *pRsp)
 int     rpcReportProgress(void *pConn, char *pCont, int contLen);
 void    rpcCancelRequest(int64_t rid);
 
+// just release client conn to rpc instance, no close sock
+void rpcReleaseHandle(void *handle);   
+
 void rpcRefHandle(void *handle, int8_t type);
 void rpcUnrefHandle(void *handle, int8_t type);
 
diff --git a/include/os/osLocale.h b/include/os/osLocale.h
index 6e313eb8cde14e67f56a9e8334239ca714b88afd..ddafd2e93c5f549beb30304d17d96dfe408ae518 100644
--- a/include/os/osLocale.h
+++ b/include/os/osLocale.h
@@ -17,12 +17,16 @@
 #define _TD_OS_LOCALE_H_
 
 #include "os.h"
-#include "osString.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+// If the error is in a third-party library, place this header file under the third-party library header file.
+#ifndef ALLOW_FORBID_FUNC
+    #define setlocale SETLOCALE_FUNC_TAOS_FORBID
+#endif
+
 char *taosCharsetReplace(char *charsetstr);
 void  taosGetSystemLocale(char *outLocale, char *outCharset);
 void  taosSetSystemLocale(const char *inLocale, const char *inCharSet);
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 13a4fc70f70b062ac8bcebdeea27714a5779efc0..646b443fb748ccb3106fa87b25f8737d693594aa 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -195,11 +195,7 @@ int32_t execDdlQuery(SRequestObj* pRequest, SQuery* pQuery) {
 int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray* pNodeList) {
   pRequest->type = pQuery->msgType;
   SPlanContext cxt = { .queryId = pRequest->requestId, .pAstRoot = pQuery->pRoot, .acctId = pRequest->pTscObj->acctId };
-  int32_t  code = qCreateQueryPlan(&cxt, pPlan, pNodeList);
-  if (code != 0) {
-    return code;
-  }
-  return code;
+  return qCreateQueryPlan(&cxt, pPlan, pNodeList);
 }
 
 void setResSchemaInfo(SReqResultInfo* pResInfo, const SSchema* pSchema, int32_t numOfCols) {
diff --git a/source/libs/nodes/src/nodesCloneFuncs.c b/source/libs/nodes/src/nodesCloneFuncs.c
index c675827253ee08085383dcc0f91a69b54679f5cc..34c211561bd3840caa612e6a3fe074138f1545cc 100644
--- a/source/libs/nodes/src/nodesCloneFuncs.c
+++ b/source/libs/nodes/src/nodesCloneFuncs.c
@@ -183,6 +183,12 @@ static SNode* groupingSetNodeCopy(const SGroupingSetNode* pSrc, SGroupingSetNode
   return (SNode*)pDst;
 }
 
+static SNode* fillNodeCopy(const SFillNode* pSrc, SFillNode* pDst) {
+  COPY_SCALAR_FIELD(mode);
+  CLONE_NODE_FIELD(pValues);
+  return (SNode*)pDst;
+}
+
 static SNode* logicNodeCopy(const SLogicNode* pSrc, SLogicNode* pDst) {
   COPY_SCALAR_FIELD(id);
   CLONE_NODE_LIST_FIELD(pTargets);
@@ -248,6 +254,17 @@ static SNode* logicExchangeCopy(const SExchangeLogicNode* pSrc, SExchangeLogicNo
   return (SNode*)pDst;
 }
 
+static SNode* logicWindowCopy(const SWindowLogicNode* pSrc, SWindowLogicNode* pDst) {
+  COPY_BASE_OBJECT_FIELD(node, logicNodeCopy);
+  COPY_SCALAR_FIELD(winType);
+  CLONE_NODE_LIST_FIELD(pFuncs);
+  COPY_SCALAR_FIELD(interval);
+  COPY_SCALAR_FIELD(offset);
+  COPY_SCALAR_FIELD(sliding);
+  CLONE_NODE_FIELD(pFill);
+  return (SNode*)pDst;
+}
+
 static SNode* logicSubplanCopy(const SSubLogicPlan* pSrc, SSubLogicPlan* pDst) {
   CLONE_NODE_FIELD(pNode);
   COPY_SCALAR_FIELD(subplanType);
@@ -309,6 +326,8 @@ SNodeptr nodesCloneNode(const SNodeptr pNode) {
     case QUERY_NODE_ORDER_BY_EXPR:
     case QUERY_NODE_LIMIT:
       break;
+    case QUERY_NODE_FILL:
+      return fillNodeCopy((const SFillNode*)pNode, (SFillNode*)pDst);
     case QUERY_NODE_DATABLOCK_DESC:
       return dataBlockDescCopy((const SDataBlockDescNode*)pNode, (SDataBlockDescNode*)pDst);
     case QUERY_NODE_SLOT_DESC:
@@ -325,6 +344,8 @@ SNodeptr nodesCloneNode(const SNodeptr pNode) {
       return logicVnodeModifCopy((const SVnodeModifLogicNode*)pNode, (SVnodeModifLogicNode*)pDst);
     case QUERY_NODE_LOGIC_PLAN_EXCHANGE:
       return logicExchangeCopy((const SExchangeLogicNode*)pNode, (SExchangeLogicNode*)pDst);
+    case QUERY_NODE_LOGIC_PLAN_WINDOW:
+      return logicWindowCopy((const SWindowLogicNode*)pNode, (SWindowLogicNode*)pDst);
     case QUERY_NODE_LOGIC_SUBPLAN:
       return logicSubplanCopy((const SSubLogicPlan*)pNode, (SSubLogicPlan*)pDst);
     default:
diff --git a/source/libs/nodes/src/nodesCodeFuncs.c b/source/libs/nodes/src/nodesCodeFuncs.c
index 782cdcb71a934fbc56d2f8f915210e883bea5d7e..57ebc2c4b6fb3956a6a80b6e688aae8751406c19 100644
--- a/source/libs/nodes/src/nodesCodeFuncs.c
+++ b/source/libs/nodes/src/nodesCodeFuncs.c
@@ -117,6 +117,8 @@ const char* nodesNodeName(ENodeType type) {
       return "PhysiExchange";
     case QUERY_NODE_PHYSICAL_PLAN_SORT:
       return "PhysiSort";
+    case QUERY_NODE_PHYSICAL_PLAN_INTERVAL:
+      return "PhysiInterval";
     case QUERY_NODE_PHYSICAL_PLAN_DISPATCH:
       return "PhysiDispatch";
     case QUERY_NODE_PHYSICAL_PLAN_INSERT:
@@ -573,6 +575,65 @@ static int32_t jsonToPhysiExchangeNode(const SJson* pJson, void* pObj) {
   return code;
 }
 
+static const char* jkIntervalPhysiPlanExprs = "Exprs";
+static const char* jkIntervalPhysiPlanFuncs = "Funcs";
+static const char* jkIntervalPhysiPlanInterval = "Interval";
+static const char* jkIntervalPhysiPlanOffset = "Offset";
+static const char* jkIntervalPhysiPlanSliding = "Sliding";
+static const char* jkIntervalPhysiPlanFill = "Fill";
+
+static int32_t physiIntervalNodeToJson(const void* pObj, SJson* pJson) {
+  const SIntervalPhysiNode* pNode = (const SIntervalPhysiNode*)pObj;
+
+  int32_t code = physicPlanNodeToJson(pObj, pJson);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = nodeListToJson(pJson, jkIntervalPhysiPlanExprs, pNode->pExprs);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = nodeListToJson(pJson, jkIntervalPhysiPlanFuncs, pNode->pFuncs);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkIntervalPhysiPlanInterval, pNode->interval);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkIntervalPhysiPlanOffset, pNode->offset);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddIntegerToObject(pJson, jkIntervalPhysiPlanSliding, pNode->sliding);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonAddObject(pJson, jkIntervalPhysiPlanFill, nodeToJson, pNode->pFill);
+  }
+
+  return code;
+}
+
+static int32_t jsonToPhysiIntervalNode(const SJson* pJson, void* pObj) {
+  SIntervalPhysiNode* pNode = (SIntervalPhysiNode*)pObj;
+
+  int32_t code = jsonToPhysicPlanNode(pJson, pObj);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeList(pJson, jkIntervalPhysiPlanExprs, &pNode->pExprs);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeList(pJson, jkIntervalPhysiPlanFuncs, &pNode->pFuncs);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetBigIntValue(pJson, jkIntervalPhysiPlanInterval, &pNode->interval);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetBigIntValue(pJson, jkIntervalPhysiPlanOffset, &pNode->offset);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tjsonGetBigIntValue(pJson, jkIntervalPhysiPlanSliding, &pNode->sliding);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = jsonToNodeObject(pJson, jkIntervalPhysiPlanFill, (SNode**)&pNode->pFill);
+  }
+
+  return code;
+}
+
 static const char* jkDataSinkInputDataBlockDesc = "InputDataBlockDesc";
 
 static int32_t physicDataSinkNodeToJson(const void* pObj, SJson* pJson) {
@@ -1500,6 +1561,8 @@ static int32_t specificNodeToJson(const void* pObj, SJson* pJson) {
       return physiExchangeNodeToJson(pObj, pJson);
     case QUERY_NODE_PHYSICAL_PLAN_SORT:
       break;
+    case QUERY_NODE_PHYSICAL_PLAN_INTERVAL:
+      return physiIntervalNodeToJson(pObj, pJson);
     case QUERY_NODE_PHYSICAL_PLAN_DISPATCH:
       return physiDispatchNodeToJson(pObj, pJson);
     case QUERY_NODE_PHYSICAL_PLAN_INSERT:
diff --git a/source/libs/nodes/src/nodesUtilFuncs.c b/source/libs/nodes/src/nodesUtilFuncs.c
index 7e1d15c191ac3237b089ea961c44ed5121c9f7c1..0adbf8cb2f0afbd0ec64c1cb5f1876e8bbbd764d 100644
--- a/source/libs/nodes/src/nodesUtilFuncs.c
+++ b/source/libs/nodes/src/nodesUtilFuncs.c
@@ -134,6 +134,8 @@ SNodeptr nodesMakeNode(ENodeType type) {
       return makeNode(type, sizeof(SVnodeModifLogicNode));
     case QUERY_NODE_LOGIC_PLAN_EXCHANGE:
       return makeNode(type, sizeof(SExchangeLogicNode));
+    case QUERY_NODE_LOGIC_PLAN_WINDOW:
+      return makeNode(type, sizeof(SWindowLogicNode));
     case QUERY_NODE_LOGIC_SUBPLAN:
       return makeNode(type, sizeof(SSubLogicPlan));
     case QUERY_NODE_LOGIC_PLAN:
@@ -156,6 +158,8 @@ SNodeptr nodesMakeNode(ENodeType type) {
       return makeNode(type, sizeof(SExchangePhysiNode));
     case QUERY_NODE_PHYSICAL_PLAN_SORT:
       return makeNode(type, sizeof(SNode));
+    case QUERY_NODE_PHYSICAL_PLAN_INTERVAL:
+      return makeNode(type, sizeof(SIntervalPhysiNode));
     case QUERY_NODE_PHYSICAL_PLAN_DISPATCH:
       return makeNode(type, sizeof(SDataDispatcherNode));
     case QUERY_NODE_PHYSICAL_PLAN_INSERT:
diff --git a/source/libs/parser/inc/sql.y b/source/libs/parser/inc/sql.y
index 310da2e966c0d1ac6f3b68a018a08e458d1bae20..f4ed3d85978a537ff676ad69642c2bd354c3ed68 100644
--- a/source/libs/parser/inc/sql.y
+++ b/source/libs/parser/inc/sql.y
@@ -198,7 +198,7 @@ col_name(A) ::= column_name(B).
 cmd ::= SHOW VGROUPS.                                                             { pCxt->pRootNode = createShowStmt(pCxt, QUERY_NODE_SHOW_VGROUPS_STMT, NULL); }
 cmd ::= SHOW db_name(B) NK_DOT VGROUPS.                                           { pCxt->pRootNode = createShowStmt(pCxt, QUERY_NODE_SHOW_VGROUPS_STMT, &B); }
 
-/************************************************ show vgroups ********************************************************/
+/************************************************ show mnodes *********************************************************/
 cmd ::= SHOW MNODES.                                                             { pCxt->pRootNode = createShowStmt(pCxt, QUERY_NODE_SHOW_MNODES_STMT, NULL); }
 
 /************************************************ select **************************************************************/
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index ac1509462bee1dad787f78ffb7e3aadf027b0acf..c1ba59dd8409b70cd81b6bb085149b8853ac8849 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -706,9 +706,17 @@ static int32_t translateGroupBy(STranslateContext* pCxt, SNodeList* pGroupByList
   return translateExprList(pCxt, pGroupByList);
 }
 
+static int32_t doTranslateWindow(STranslateContext* pCxt, SNode* pWindow) {
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t translateWindow(STranslateContext* pCxt, SNode* pWindow) {
   pCxt->currClause = SQL_CLAUSE_WINDOW;
-  return translateExpr(pCxt, pWindow);
+  int32_t code = translateExpr(pCxt, pWindow);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = doTranslateWindow(pCxt, pWindow);
+  }
+  return code;
 }
 
 static int32_t translatePartitionBy(STranslateContext* pCxt, SNodeList* pPartitionByList) {
diff --git a/source/libs/parser/test/parserAstTest.cpp b/source/libs/parser/test/parserAstTest.cpp
index f9a2bafe1066f522d3c880155643523e89acdf56..d30c21cc2113355e3671d8e53ad0b1aece63454e 100644
--- a/source/libs/parser/test/parserAstTest.cpp
+++ b/source/libs/parser/test/parserAstTest.cpp
@@ -183,6 +183,13 @@ TEST_F(ParserTest, selectClause) {
   ASSERT_TRUE(run());
 }
 
+TEST_F(ParserTest, selectWindow) {
+  setDatabase("root", "test");
+
+  bind("SELECT count(*) FROM t1 interval(10s)");
+  ASSERT_TRUE(run());
+}
+
 TEST_F(ParserTest, selectSyntaxError) {
   setDatabase("root", "test");
 
diff --git a/source/libs/planner/src/planLogicCreater.c b/source/libs/planner/src/planLogicCreater.c
index a93985e8ba26cec7af6935222548378dc3656961..7520ea3c9e3c36d503d1358845d44bb42bf105a9 100644
--- a/source/libs/planner/src/planLogicCreater.c
+++ b/source/libs/planner/src/planLogicCreater.c
@@ -304,6 +304,50 @@ static SLogicNode* createAggLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSel
   return (SLogicNode*)pAgg;
 }
 
+static SLogicNode* createWindowLogicNodeByInterval(SLogicPlanContext* pCxt, SIntervalWindowNode* pInterval, SSelectStmt* pSelect) {
+  SWindowLogicNode* pWindow = nodesMakeNode(QUERY_NODE_LOGIC_PLAN_WINDOW);
+  CHECK_ALLOC(pWindow, NULL);
+  pWindow->node.id = pCxt->planNodeId++;
+
+  pWindow->winType = WINDOW_TYPE_INTERVAL;
+  pWindow->interval = ((SValueNode*)pInterval->pInterval)->datum.i;
+  pWindow->offset = (NULL != pInterval->pOffset ? ((SValueNode*)pInterval->pOffset)->datum.i : 0);
+  pWindow->sliding = (NULL != pInterval->pSliding ? ((SValueNode*)pInterval->pSliding)->datum.i : 0);
+  if (NULL != pInterval->pFill) {
+    pWindow->pFill = nodesCloneNode(pInterval->pFill);
+    CHECK_ALLOC(pWindow->pFill, (SLogicNode*)pWindow);
+  }
+
+  SNodeList* pFuncs = NULL;
+  CHECK_CODE(nodesCollectFuncs(pSelect, fmIsAggFunc, &pFuncs), NULL);
+  if (NULL != pFuncs) {
+    pWindow->pFuncs = nodesCloneList(pFuncs);
+    CHECK_ALLOC(pWindow->pFuncs, (SLogicNode*)pWindow);
+  }
+
+  CHECK_CODE(rewriteExpr(pWindow->node.id, 1, pWindow->pFuncs, pSelect, SQL_CLAUSE_WINDOW), (SLogicNode*)pWindow);
+
+  pWindow->node.pTargets = createColumnByRewriteExps(pCxt, pWindow->pFuncs);
+  CHECK_ALLOC(pWindow->node.pTargets, (SLogicNode*)pWindow);
+
+  return (SLogicNode*)pWindow;
+}
+
+static SLogicNode* createWindowLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect) {
+  if (NULL == pSelect->pWindow) {
+    return NULL;
+  }
+
+  switch (nodeType(pSelect->pWindow)) {
+    case QUERY_NODE_INTERVAL_WINDOW:
+      return createWindowLogicNodeByInterval(pCxt, (SIntervalWindowNode*)pSelect->pWindow, pSelect);    
+    default:
+      break;
+  }
+
+  return NULL;
+}
+
 static SNodeList* createColumnByProjections(SLogicPlanContext* pCxt, SNodeList* pExprs) {
   SNodeList* pList = nodesMakeList();
   CHECK_ALLOC(pList, NULL);
@@ -345,6 +389,9 @@ static SLogicNode* createSelectLogicNode(SLogicPlanContext* pCxt, SSelectStmt* p
     pRoot->pConditions = nodesCloneNode(pSelect->pWhere);
     CHECK_ALLOC(pRoot->pConditions, pRoot);
   }
+  if (TSDB_CODE_SUCCESS == pCxt->errCode) {
+    pRoot = pushLogicNode(pCxt, pRoot, createWindowLogicNode(pCxt, pSelect));
+  }
   if (TSDB_CODE_SUCCESS == pCxt->errCode) {
     pRoot = pushLogicNode(pCxt, pRoot, createAggLogicNode(pCxt, pSelect));
   }
diff --git a/source/libs/planner/src/planPhysiCreater.c b/source/libs/planner/src/planPhysiCreater.c
index 5af26b3e32cf6168b79aa1da7194f786d42c3665..7b7dd26df1a985463f915408f8984d00f245653f 100644
--- a/source/libs/planner/src/planPhysiCreater.c
+++ b/source/libs/planner/src/planPhysiCreater.c
@@ -473,14 +473,58 @@ static SPhysiNode* createExchangePhysiNode(SPhysiPlanContext* pCxt, SExchangeLog
   return (SPhysiNode*)pExchange;
 }
 
+static SPhysiNode* createIntervalPhysiNode(SPhysiPlanContext* pCxt, SNodeList* pChildren, SWindowLogicNode* pWindowLogicNode) {
+  SIntervalPhysiNode* pInterval = (SIntervalPhysiNode*)makePhysiNode(pCxt, QUERY_NODE_PHYSICAL_PLAN_INTERVAL);
+  CHECK_ALLOC(pInterval, NULL);
+
+  pInterval->interval = pWindowLogicNode->interval;
+  pInterval->offset = pWindowLogicNode->offset;
+  pInterval->sliding = pWindowLogicNode->sliding;
+  pInterval->pFill = nodesCloneNode(pWindowLogicNode->pFill);
+
+  SNodeList* pPrecalcExprs = NULL;
+  SNodeList* pFuncs = NULL;
+  CHECK_CODE(rewritePrecalcExprs(pCxt, pWindowLogicNode->pFuncs, &pPrecalcExprs, &pFuncs), (SPhysiNode*)pInterval);
+
+  SDataBlockDescNode* pChildTupe = (((SPhysiNode*)nodesListGetNode(pChildren, 0))->pOutputDataBlockDesc);
+  // push down expression to pOutputDataBlockDesc of child node
+  if (NULL != pPrecalcExprs) {
+    pInterval->pExprs = setListSlotId(pCxt, pChildTupe->dataBlockId, -1, pPrecalcExprs);
+    CHECK_ALLOC(pInterval->pExprs, (SPhysiNode*)pInterval);
+    CHECK_CODE(addDataBlockDesc(pCxt, pInterval->pExprs, pChildTupe), (SPhysiNode*)pInterval);
+  }
+
+  if (NULL != pFuncs) {
+    pInterval->pFuncs = setListSlotId(pCxt, pChildTupe->dataBlockId, -1, pFuncs);
+    CHECK_ALLOC(pInterval->pFuncs, (SPhysiNode*)pInterval);
+    CHECK_CODE(addDataBlockDesc(pCxt, pInterval->pFuncs, pInterval->node.pOutputDataBlockDesc), (SPhysiNode*)pInterval);
+  }
+
+  CHECK_CODE(setSlotOutput(pCxt, pWindowLogicNode->node.pTargets, pInterval->node.pOutputDataBlockDesc), (SPhysiNode*)pInterval);
+
+  return (SPhysiNode*)pInterval;
+}
+
+static SPhysiNode* createWindowPhysiNode(SPhysiPlanContext* pCxt, SNodeList* pChildren, SWindowLogicNode* pWindowLogicNode) {
+  switch (pWindowLogicNode->winType) {
+    case WINDOW_TYPE_INTERVAL:
+      return createIntervalPhysiNode(pCxt, pChildren, pWindowLogicNode);
+    case WINDOW_TYPE_SESSION:
+    case WINDOW_TYPE_STATE:
+      break;
+    default:
+      break;
+  }
+  return NULL;
+}
+
 static SPhysiNode* createPhysiNode(SPhysiPlanContext* pCxt, SSubplan* pSubplan, SLogicNode* pLogicPlan) {
   SNodeList* pChildren = nodesMakeList();
   CHECK_ALLOC(pChildren, NULL);
 
   SNode* pLogicChild;
   FOREACH(pLogicChild, pLogicPlan->pChildren) {
-    SNode* pChildPhyNode = (SNode*)createPhysiNode(pCxt, pSubplan, (SLogicNode*)pLogicChild);
-    if (TSDB_CODE_SUCCESS != nodesListAppend(pChildren, pChildPhyNode)) {
+    if (TSDB_CODE_SUCCESS != nodesListStrictAppend(pChildren, createPhysiNode(pCxt, pSubplan, (SLogicNode*)pLogicChild))) {
       pCxt->errCode = TSDB_CODE_OUT_OF_MEMORY;
       nodesDestroyList(pChildren);
       return NULL;
@@ -504,6 +548,9 @@ static SPhysiNode* createPhysiNode(SPhysiPlanContext* pCxt, SSubplan* pSubplan,
     case QUERY_NODE_LOGIC_PLAN_EXCHANGE:
       pPhyNode = createExchangePhysiNode(pCxt, (SExchangeLogicNode*)pLogicPlan);
       break;
+    case QUERY_NODE_LOGIC_PLAN_WINDOW:
+      pPhyNode = createWindowPhysiNode(pCxt, pChildren, (SWindowLogicNode*)pLogicPlan);
+      break;
     default:
       break;
   }
diff --git a/source/libs/planner/test/plannerTest.cpp b/source/libs/planner/test/plannerTest.cpp
index 1af89d71c94e9c9cd2ea298e923178f4489e6631..8baa64d8fb78b92bbee314442ccf2f0b30cc2213 100644
--- a/source/libs/planner/test/plannerTest.cpp
+++ b/source/libs/planner/test/plannerTest.cpp
@@ -166,3 +166,10 @@ TEST_F(PlannerTest, subquery) {
   bind("SELECT count(*) FROM (SELECT c1 + c3 a, c1 + count(*) b FROM t1 where c2 = 'abc' GROUP BY c1, c3) where a > 100 group by b");
   ASSERT_TRUE(run());
 }
+
+TEST_F(PlannerTest, interval) {
+  setDatabase("root", "test");
+
+  bind("SELECT count(*) FROM t1 interval(10s)");
+  ASSERT_TRUE(run());
+}
diff --git a/source/libs/transport/inc/transComm.h b/source/libs/transport/inc/transComm.h
index f2ac77fe61e41cbc8d041cfb82d80d3a39f0e505..99f890d3a0288b6da16c8047267986213a43e5fd 100644
--- a/source/libs/transport/inc/transComm.h
+++ b/source/libs/transport/inc/transComm.h
@@ -120,6 +120,10 @@ typedef struct {
   // SEpSet*          pSet;      // for synchronous API
 } SRpcReqContext;
 
+typedef SRpcMsg      STransMsg;
+typedef SRpcInfo     STrans;
+typedef SRpcConnInfo STransHandleInfo;
+
 typedef struct {
   SEpSet epSet;    // ip list provided by app
   void*  ahandle;  // handle provided by app
@@ -134,8 +138,8 @@ typedef struct {
   int8_t  connType;  // connection type
   int64_t rid;       // refId returned by taosAddRef
 
-  SRpcMsg* pRsp;  // for synchronous API
-  tsem_t*  pSem;  // for synchronous API
+  STransMsg* pRsp;  // for synchronous API
+  tsem_t*    pSem;  // for synchronous API
 
   int      hThrdIdx;
   char*    ip;
@@ -249,4 +253,15 @@ void transUnrefSrvHandle(void* handle);
 void transRefCliHandle(void* handle);
 void transUnrefCliHandle(void* handle);
 
+void transSendRequest(void* shandle, const char* ip, uint32_t port, STransMsg* pMsg);
+void transSendRecv(void* shandle, const char* ip, uint32_t port, STransMsg* pMsg, STransMsg* pRsp);
+void transSendResponse(const STransMsg* pMsg);
+int  transGetConnInfo(void* thandle, STransHandleInfo* pInfo);
+
+void* transInitServer(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle);
+void* transInitClient(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle);
+
+void transCloseClient(void* arg);
+void transCloseServer(void* arg);
+
 #endif
diff --git a/source/libs/transport/inc/transportInt.h b/source/libs/transport/inc/transportInt.h
index 4e4dcf7aa4b033959f793c705768694f7ebcf0a3..3924a5cf1a022349233eef43e57a00ff5d56bb40 100644
--- a/source/libs/transport/inc/transportInt.h
+++ b/source/libs/transport/inc/transportInt.h
@@ -64,6 +64,7 @@ typedef struct {
   void (*cfp)(void* parent, SRpcMsg*, SEpSet*);
   int (*afp)(void* parent, char* user, char* spi, char* encrypt, char* secret, char* ckey);
   bool (*pfp)(void* parent, tmsg_t msgType);
+  void* (*mfp)(void* parent, tmsg_t msgType);
 
   int32_t         refCount;
   void*           parent;
diff --git a/source/libs/transport/src/trans.c b/source/libs/transport/src/trans.c
index 4d244665c7d84dbfedded1e9339097d4a1bdfb3c..015018f73f32d113706f0b27f4b75a0e1713caed 100644
--- a/source/libs/transport/src/trans.c
+++ b/source/libs/transport/src/trans.c
@@ -18,8 +18,9 @@
 #include "transComm.h"
 
 void* (*taosInitHandle[])(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle) = {
-    taosInitServer, taosInitClient};
-void (*taosCloseHandle[])(void* arg) = {taosCloseServer, taosCloseClient};
+    transInitServer, transInitClient};
+
+void (*taosCloseHandle[])(void* arg) = {transCloseServer, transCloseClient};
 
 void* rpcOpen(const SRpcInit* pInit) {
   SRpcInfo* pRpc = calloc(1, sizeof(SRpcInfo));
@@ -34,11 +35,12 @@ void* rpcOpen(const SRpcInit* pInit) {
   pRpc->cfp = pInit->cfp;
   pRpc->afp = pInit->afp;
   pRpc->pfp = pInit->pfp;
+  pRpc->mfp = pInit->mfp;
 
   if (pInit->connType == TAOS_CONN_SERVER) {
     pRpc->numOfThreads = pInit->numOfThreads > TSDB_MAX_RPC_THREADS ? TSDB_MAX_RPC_THREADS : pInit->numOfThreads;
   } else {
-    pRpc->numOfThreads = pInit->numOfThreads;
+    pRpc->numOfThreads = pInit->numOfThreads > TSDB_MAX_RPC_THREADS ? TSDB_MAX_RPC_THREADS : pInit->numOfThreads;
   }
 
   pRpc->connType = pInit->connType;
@@ -116,6 +118,24 @@ int32_t rpcInit() {
   return 0;
 }
 
+void rpcSendRequest(void *shandle, const SEpSet *pEpSet, SRpcMsg* pMsg, int64_t *pRid) {
+  char*    ip = (char*)(pEpSet->eps[pEpSet->inUse].fqdn);
+  uint32_t port = pEpSet->eps[pEpSet->inUse].port;
+  transSendRequest(shandle, ip, port, pMsg);   
+}
+void rpcSendRecv(void* shandle, SEpSet *pEpSet, SRpcMsg *pMsg, SRpcMsg *pRsp) {
+  char*    ip = (char*)(pEpSet->eps[pEpSet->inUse].fqdn);
+  uint32_t port = pEpSet->eps[pEpSet->inUse].port;
+  transSendRecv(shandle, ip, port, pMsg, pRsp);
+}
+
+void rpcSendResponse(const SRpcMsg *pMsg) {
+  transSendResponse(pMsg);  
+}
+int rpcGetConnInfo(void *thandle, SRpcConnInfo *pInfo) {
+  return transGetConnInfo((void *)thandle, pInfo);
+}
+
 void rpcCleanup(void) {
   // impl later
   //
@@ -129,6 +149,7 @@ void rpcRefHandle(void* handle, int8_t type) {
   assert(type == TAOS_CONN_SERVER || type == TAOS_CONN_CLIENT);
   (*taosRefHandle[type])(handle);
 }
+
 void rpcUnrefHandle(void* handle, int8_t type) {
   assert(type == TAOS_CONN_SERVER || type == TAOS_CONN_CLIENT);
   (*taosUnRefHandle[type])(handle);
diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 727845b7a978fe56fd0a9de5a89db40796392b07..4af02a982ef30e150cb8556ae969067df3d4dd6d 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -42,7 +42,7 @@ typedef struct SCliConn {
 
 typedef struct SCliMsg {
   STransConnCtx* ctx;
-  SRpcMsg        msg;
+  STransMsg      msg;
   queue          q;
   uint64_t       st;
 } SCliMsg;
@@ -105,9 +105,9 @@ static void cliHandleExcept(SCliConn* conn);
 static void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd);
 static void cliHandleQuit(SCliMsg* pMsg, SCliThrdObj* pThrd);
 static void cliSendQuit(SCliThrdObj* thrd);
-static void destroyUserdata(SRpcMsg* userdata);
+static void destroyUserdata(STransMsg* userdata);
 
-static int cliRBChoseIdx(SRpcInfo* pTransInst);
+static int cliRBChoseIdx(STrans* pTransInst);
 
 static void destroyCmsg(SCliMsg* cmsg);
 static void transDestroyConnCtx(STransConnCtx* ctx);
@@ -118,11 +118,11 @@ static void         destroyThrdObj(SCliThrdObj* pThrd);
 #define CONN_HOST_THREAD_INDEX(conn) (conn ? ((SCliConn*)conn)->hThrdIdx : -1)
 #define CONN_PERSIST_TIME(para) (para * 1000 * 10)
 
-#define CONN_GET_INST_LABEL(conn) (((SRpcInfo*)(((SCliThrdObj*)conn->hostThrd)->pTransInst))->label)
+#define CONN_GET_INST_LABEL(conn) (((STrans*)(((SCliThrdObj*)conn->hostThrd)->pTransInst))->label)
 #define CONN_HANDLE_THREAD_QUIT(conn, thrd) \
   do {                                      \
     if (thrd->quit) {                       \
-      cliHandleExcept(conn);             \
+      cliHandleExcept(conn);                \
       goto _RETURE;                         \
     }                                       \
   } while (0)
@@ -130,20 +130,25 @@ static void         destroyThrdObj(SCliThrdObj* pThrd);
 #define CONN_HANDLE_BROKEN(conn) \
   do {                           \
     if (conn->broken) {          \
-      cliHandleExcept(conn);  \
+      cliHandleExcept(conn);     \
       goto _RETURE;              \
     }                            \
   } while (0);
 
-static void* cliWorkThread(void* arg);
+#define CONN_SET_PERSIST_BY_APP(conn) \
+  do {                                \
+    if (conn->persist == false) {     \
+      conn->persist = true;           \
+      transRefCliHandle(conn);        \
+    }                                 \
+  } while (0)
+#define CONN_NO_PERSIST_BY_APP(conn) ((conn)->persist == false)
 
-static void* cliNotifyApp() {}
-static void  cliHandleResp(SCliConn* conn) {
-  SCliMsg*       pMsg = conn->data;
-  STransConnCtx* pCtx = pMsg->ctx;
+static void* cliWorkThread(void* arg);
 
+void cliHandleResp(SCliConn* conn) {
   SCliThrdObj* pThrd = conn->hostThrd;
-  SRpcInfo*    pTransInst = pThrd->pTransInst;
+  STrans*      pTransInst = pThrd->pTransInst;
 
   STransMsgHead* pHead = (STransMsgHead*)(conn->readBuf.buf);
   pHead->code = htonl(pHead->code);
@@ -152,19 +157,29 @@ static void  cliHandleResp(SCliConn* conn) {
   // buf's mem alread translated to rpcMsg.pCont
   transClearBuffer(&conn->readBuf);
 
-  SRpcMsg rpcMsg = {0};
+  STransMsg rpcMsg = {0};
   rpcMsg.contLen = transContLenFromMsg(pHead->msgLen);
   rpcMsg.pCont = transContFromHead((char*)pHead);
   rpcMsg.code = pHead->code;
   rpcMsg.msgType = pHead->msgType;
-  rpcMsg.ahandle = pCtx->ahandle;
+  rpcMsg.ahandle = NULL;
 
-  if (pTransInst->pfp != NULL && (pTransInst->pfp)(pTransInst->parent, rpcMsg.msgType)) {
-    rpcMsg.handle = conn;
-    transRefCliHandle(conn);
+  SCliMsg*       pMsg = conn->data;
+  STransConnCtx* pCtx = pMsg ? pMsg->ctx : NULL;
+  if (pMsg == NULL && !CONN_NO_PERSIST_BY_APP(conn)) {
+    rpcMsg.ahandle = pTransInst->mfp ? (*pTransInst->mfp)(pTransInst->parent, rpcMsg.msgType) : NULL;
+  } else {
+    rpcMsg.ahandle = pCtx ? pCtx->ahandle : NULL;
+  }
+  // if (rpcMsg.ahandle == NULL) {
+  //  tDebug("%s cli conn %p handle except", CONN_GET_INST_LABEL(conn), conn);
+  //  return;
+  //}
 
-    conn->persist = 1;
-    tDebug("cli conn %p persist by app", conn);
+  if (pTransInst->pfp != NULL && (*pTransInst->pfp)(pTransInst->parent, rpcMsg.msgType)) {
+    rpcMsg.handle = conn;
+    CONN_SET_PERSIST_BY_APP(conn);
+    tDebug("%s cli conn %p ref by app", CONN_GET_INST_LABEL(conn), conn);
   }
 
   tDebug("%s cli conn %p %s received from %s:%d, local info: %s:%d, msg size: %d", pTransInst->label, conn,
@@ -173,7 +188,7 @@ static void  cliHandleResp(SCliConn* conn) {
 
   conn->secured = pHead->secured;
 
-  if (pCtx->pSem == NULL) {
+  if (pCtx == NULL || pCtx->pSem == NULL) {
     tTrace("%s cli conn %p handle resp", pTransInst->label, conn);
     (pTransInst->cfp)(pTransInst->parent, &rpcMsg, NULL);
   } else {
@@ -184,8 +199,7 @@ static void  cliHandleResp(SCliConn* conn) {
 
   uv_read_start((uv_stream_t*)conn->stream, cliAllocBufferCb, cliRecvCb);
 
-  // user owns conn->persist = 1
-  if (conn->persist == 0) {
+  if (CONN_NO_PERSIST_BY_APP(conn)) {
     addConnToPool(pThrd->pool, pCtx->ip, pCtx->port, conn);
   }
   destroyCmsg(conn->data);
@@ -196,24 +210,32 @@ static void  cliHandleResp(SCliConn* conn) {
     // uv_timer_start((uv_timer_t*)&pThrd->timer, cliTimeoutCb, CONN_PERSIST_TIME(pRpc->idleTime) / 2, 0);
   }
 }
-static void cliHandleExcept(SCliConn* pConn) {
+
+void cliHandleExcept(SCliConn* pConn) {
   if (pConn->data == NULL) {
-    // handle conn except in conn pool
-    transUnrefCliHandle(pConn);
-    return;
+    if (pConn->broken == true || CONN_NO_PERSIST_BY_APP(pConn)) {
+      transUnrefCliHandle(pConn);
+      return;
+    }
   }
   SCliThrdObj* pThrd = pConn->hostThrd;
-  SRpcInfo*    pTransInst = pThrd->pTransInst;
+  STrans*      pTransInst = pThrd->pTransInst;
 
   SCliMsg*       pMsg = pConn->data;
-  STransConnCtx* pCtx = pMsg->ctx;
+  STransConnCtx* pCtx = pMsg ? pMsg->ctx : NULL;
 
-  SRpcMsg rpcMsg = {0};
-  rpcMsg.ahandle = pCtx->ahandle;
+  STransMsg rpcMsg = {0};
   rpcMsg.code = TSDB_CODE_RPC_NETWORK_UNAVAIL;
-  rpcMsg.msgType = pMsg->msg.msgType + 1;
+  rpcMsg.msgType = pMsg ? pMsg->msg.msgType + 1 : 0;
+  rpcMsg.ahandle = NULL;
+
+  if (pMsg == NULL && !CONN_NO_PERSIST_BY_APP(pConn)) {
+    rpcMsg.ahandle = pTransInst->mfp ? (*pTransInst->mfp)(pTransInst->parent, rpcMsg.msgType) : NULL;
+  } else {
+    rpcMsg.ahandle = pCtx ? pCtx->ahandle : NULL;
+  }
 
-  if (pCtx->pSem == NULL) {
+  if (pCtx == NULL || pCtx->pSem == NULL) {
     tTrace("%s cli conn %p handle resp", pTransInst->label, pConn);
     (pTransInst->cfp)(pTransInst->parent, &rpcMsg, NULL);
   } else {
@@ -228,9 +250,9 @@ static void cliHandleExcept(SCliConn* pConn) {
   transUnrefCliHandle(pConn);
 }
 
-static void cliTimeoutCb(uv_timer_t* handle) {
+void cliTimeoutCb(uv_timer_t* handle) {
   SCliThrdObj* pThrd = handle->data;
-  SRpcInfo*    pRpc = pThrd->pTransInst;
+  STrans*      pRpc = pThrd->pTransInst;
   int64_t      currentTime = pThrd->nextTimeout;
   tTrace("%s, cli conn timeout, try to remove expire conn from conn pool", pRpc->label);
 
@@ -252,11 +274,12 @@ static void cliTimeoutCb(uv_timer_t* handle) {
   pThrd->nextTimeout = taosGetTimestampMs() + CONN_PERSIST_TIME(pRpc->idleTime);
   uv_timer_start(handle, cliTimeoutCb, CONN_PERSIST_TIME(pRpc->idleTime) / 2, 0);
 }
-static void* createConnPool(int size) {
+
+void* createConnPool(int size) {
   // thread local, no lock
   return taosHashInit(size, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
 }
-static void* destroyConnPool(void* pool) {
+void* destroyConnPool(void* pool) {
   SConnList* connList = taosHashIterate((SHashObj*)pool, NULL);
   while (connList != NULL) {
     while (!QUEUE_IS_EMPTY(&connList->conn)) {
@@ -301,7 +324,7 @@ static void addConnToPool(void* pool, char* ip, uint32_t port, SCliConn* conn) {
   tstrncpy(key + strlen(key), (char*)(&port), sizeof(port));
   tTrace("cli conn %p added to conn pool, read buf cap: %d", conn, conn->readBuf.cap);
 
-  SRpcInfo* pRpc = ((SCliThrdObj*)conn->hostThrd)->pTransInst;
+  STrans* pRpc = ((SCliThrdObj*)conn->hostThrd)->pTransInst;
 
   conn->expireTime = taosGetTimestampMs() + CONN_PERSIST_TIME(pRpc->idleTime);
   SConnList* plist = taosHashGet((SHashObj*)pool, key, strlen(key));
@@ -358,6 +381,7 @@ static SCliConn* cliCreateConn(SCliThrdObj* pThrd) {
 
   QUEUE_INIT(&conn->conn);
   conn->hostThrd = pThrd;
+  conn->persist = false;
   conn->broken = false;
   transRefCliHandle(conn);
   return conn;
@@ -395,16 +419,16 @@ static void cliSendCb(uv_write_t* req, int status) {
   uv_read_start((uv_stream_t*)pConn->stream, cliAllocBufferCb, cliRecvCb);
 }
 
-static void cliSend(SCliConn* pConn) {
+void cliSend(SCliConn* pConn) {
   CONN_HANDLE_BROKEN(pConn);
 
   SCliMsg*       pCliMsg = pConn->data;
   STransConnCtx* pCtx = pCliMsg->ctx;
 
   SCliThrdObj* pThrd = pConn->hostThrd;
-  SRpcInfo*    pTransInst = pThrd->pTransInst;
+  STrans*      pTransInst = pThrd->pTransInst;
 
-  SRpcMsg* pMsg = (SRpcMsg*)(&pCliMsg->msg);
+  STransMsg* pMsg = (STransMsg*)(&pCliMsg->msg);
 
   STransMsgHead* pHead = transHeadFromCont(pMsg->pCont);
   int            msgLen = transMsgLenFromCont(pMsg->contLen);
@@ -442,7 +466,8 @@ static void cliSend(SCliConn* pConn) {
 _RETURE:
   return;
 }
-static void cliConnCb(uv_connect_t* req, int status) {
+
+void cliConnCb(uv_connect_t* req, int status) {
   // impl later
   SCliConn* pConn = req->data;
   if (status != 0) {
@@ -472,11 +497,11 @@ static void cliHandleQuit(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   pThrd->quit = true;
   uv_stop(pThrd->loop);
 }
-static SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrdObj* pThrd) {
+
+SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   SCliConn* conn = NULL;
   if (pMsg->msg.handle != NULL) {
     conn = (SCliConn*)(pMsg->msg.handle);
-    transUnrefCliHandle(conn);
     if (conn != NULL) {
       tTrace("%s cli conn %p reused", CONN_GET_INST_LABEL(conn), conn);
     }
@@ -487,13 +512,14 @@ static SCliConn* cliGetConn(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   }
   return conn;
 }
-static void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
+
+void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   uint64_t et = taosGetTimestampUs();
   uint64_t el = et - pMsg->st;
-  tTrace("%s cli msg tran time cost: %" PRIu64 "us", ((SRpcInfo*)pThrd->pTransInst)->label, el);
+  tTrace("%s cli msg tran time cost: %" PRIu64 "us", ((STrans*)pThrd->pTransInst)->label, el);
 
   STransConnCtx* pCtx = pMsg->ctx;
-  SRpcInfo*      pTransInst = pThrd->pTransInst;
+  STrans*        pTransInst = pThrd->pTransInst;
 
   SCliConn* conn = cliGetConn(pMsg, pThrd);
   if (conn != NULL) {
@@ -514,6 +540,7 @@ static void cliHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
     tTrace("%s cli conn %p try to connect to %s:%d", pTransInst->label, conn, pMsg->ctx->ip, pMsg->ctx->port);
     uv_tcp_connect(&conn->connReq, (uv_tcp_t*)(conn->stream), (const struct sockaddr*)&addr, cliConnCb);
   }
+
   conn->hThrdIdx = pCtx->hThrdIdx;
 }
 static void cliAsyncCb(uv_async_t* handle) {
@@ -522,7 +549,7 @@ static void cliAsyncCb(uv_async_t* handle) {
   SCliMsg*     pMsg = NULL;
 
   // batch process to avoid to lock/unlock frequently
-  queue        wq;
+  queue wq;
   pthread_mutex_lock(&item->mtx);
   QUEUE_MOVE(&item->qmsg, &wq);
   pthread_mutex_unlock(&item->mtx);
@@ -551,10 +578,10 @@ static void* cliWorkThread(void* arg) {
   uv_run(pThrd->loop, UV_RUN_DEFAULT);
 }
 
-void* taosInitClient(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle) {
+void* transInitClient(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle) {
   SCliObj* cli = calloc(1, sizeof(SCliObj));
 
-  SRpcInfo* pRpc = shandle;
+  STrans* pRpc = shandle;
   memcpy(cli->label, label, strlen(label));
   cli->numOfThreads = numOfThreads;
   cli->pThreadObj = (SCliThrdObj**)calloc(cli->numOfThreads, sizeof(SCliThrdObj*));
@@ -573,7 +600,7 @@ void* taosInitClient(uint32_t ip, uint32_t port, char* label, int numOfThreads,
   return cli;
 }
 
-static void destroyUserdata(SRpcMsg* userdata) {
+static void destroyUserdata(STransMsg* userdata) {
   if (userdata->pCont == NULL) {
     return;
   }
@@ -629,12 +656,20 @@ static void transDestroyConnCtx(STransConnCtx* ctx) {
   free(ctx);
 }
 //
-static void cliSendQuit(SCliThrdObj* thrd) {
+void cliSendQuit(SCliThrdObj* thrd) {
   // cli can stop gracefully
   SCliMsg* msg = calloc(1, sizeof(SCliMsg));
   transSendAsync(thrd->asyncPool, &msg->q);
 }
-void taosCloseClient(void* arg) {
+int cliRBChoseIdx(STrans* pTransInst) {
+  int64_t index = pTransInst->index;
+  if (pTransInst->index++ >= pTransInst->numOfThreads) {
+    pTransInst->index = 0;
+  }
+  return index % pTransInst->numOfThreads;
+}
+
+void transCloseClient(void* arg) {
   SCliObj* cli = arg;
   for (int i = 0; i < cli->numOfThreads; i++) {
     cliSendQuit(cli->pThreadObj[i]);
@@ -643,13 +678,6 @@ void taosCloseClient(void* arg) {
   free(cli->pThreadObj);
   free(cli);
 }
-static int cliRBChoseIdx(SRpcInfo* pTransInst) {
-  int64_t index = pTransInst->index;
-  if (pTransInst->index++ >= pTransInst->numOfThreads) {
-    pTransInst->index = 0;
-  }
-  return index % pTransInst->numOfThreads;
-}
 void transRefCliHandle(void* handle) {
   if (handle == NULL) {
     return;
@@ -665,17 +693,11 @@ void transUnrefCliHandle(void* handle) {
   if (ref == 0) {
     cliDestroyConn((SCliConn*)handle, true);
   }
-
-  // unref cli handle
 }
-void rpcSendRequest(void* shandle, const SEpSet* pEpSet, SRpcMsg* pMsg, int64_t* pRid) {
-  // impl later
-  char*    ip = (char*)(pEpSet->eps[pEpSet->inUse].fqdn);
-  uint32_t port = pEpSet->eps[pEpSet->inUse].port;
-
-  SRpcInfo* pTransInst = (SRpcInfo*)shandle;
 
-  int index = CONN_HOST_THREAD_INDEX(pMsg->handle);
+void transSendRequest(void* shandle, const char* ip, uint32_t port, STransMsg* pMsg) {
+  STrans* pTransInst = (STrans*)shandle;
+  int     index = CONN_HOST_THREAD_INDEX((SCliConn*)pMsg->handle);
   if (index == -1) {
     index = cliRBChoseIdx(pTransInst);
   }
@@ -683,6 +705,7 @@ void rpcSendRequest(void* shandle, const SEpSet* pEpSet, SRpcMsg* pMsg, int64_t*
   if (transCompressMsg(pMsg->pCont, pMsg->contLen, &flen)) {
     // imp later
   }
+  tDebug("send request at thread:%d %p", index, pMsg);
   STransConnCtx* pCtx = calloc(1, sizeof(STransConnCtx));
   pCtx->ahandle = pMsg->ahandle;
   pCtx->msgType = pMsg->msgType;
@@ -701,14 +724,9 @@ void rpcSendRequest(void* shandle, const SEpSet* pEpSet, SRpcMsg* pMsg, int64_t*
   SCliThrdObj* thrd = ((SCliObj*)pTransInst->tcphandle)->pThreadObj[index];
   transSendAsync(thrd->asyncPool, &(cliMsg->q));
 }
-
-void rpcSendRecv(void* shandle, SEpSet* pEpSet, SRpcMsg* pReq, SRpcMsg* pRsp) {
-  char*    ip = (char*)(pEpSet->eps[pEpSet->inUse].fqdn);
-  uint32_t port = pEpSet->eps[pEpSet->inUse].port;
-
-  SRpcInfo* pTransInst = (SRpcInfo*)shandle;
-
-  int index = CONN_HOST_THREAD_INDEX(pReq->handle);
+void transSendRecv(void* shandle, const char* ip, uint32_t port, STransMsg* pReq, STransMsg* pRsp) {
+  STrans* pTransInst = (STrans*)shandle;
+  int     index = CONN_HOST_THREAD_INDEX(pReq->handle);
   if (index == -1) {
     index = cliRBChoseIdx(pTransInst);
   }
@@ -734,7 +752,6 @@ void rpcSendRecv(void* shandle, SEpSet* pEpSet, SRpcMsg* pReq, SRpcMsg* pRsp) {
   tsem_wait(pSem);
   tsem_destroy(pSem);
   free(pSem);
-
-  return;
 }
+
 #endif
diff --git a/source/libs/transport/src/transSrv.c b/source/libs/transport/src/transSrv.c
index 1abca9ad975ef6be1900a2b84f24d94a624889a1..c236a69f4ee0663112797d34f6623776365abd70 100644
--- a/source/libs/transport/src/transSrv.c
+++ b/source/libs/transport/src/transSrv.c
@@ -37,8 +37,7 @@ typedef struct SSrvConn {
 
   struct sockaddr_in addr;
   struct sockaddr_in locaddr;
-  // SRpcMsg sendMsg;
-  // del later
+
   char secured;
   int  spi;
   char info[64];
@@ -49,7 +48,7 @@ typedef struct SSrvConn {
 
 typedef struct SSrvMsg {
   SSrvConn* pConn;
-  SRpcMsg   msg;
+  STransMsg msg;
   queue     q;
 } SSrvMsg;
 
@@ -207,20 +206,20 @@ static void uvHandleReq(SSrvConn* pConn) {
 
   pConn->inType = pHead->msgType;
 
-  SRpcInfo* pRpc = (SRpcInfo*)p->shandle;
+  STrans* pRpc = (STrans*)p->shandle;
   pHead->code = htonl(pHead->code);
 
   int32_t dlen = 0;
   if (transDecompressMsg(NULL, 0, NULL)) {
     // add compress later
-    // pHead = rpcDecompressRpcMsg(pHead);
+    // pHead = rpcDecompresSTransMsg(pHead);
   } else {
     pHead->msgLen = htonl(pHead->msgLen);
     // impl later
     //
   }
 
-  SRpcMsg rpcMsg;
+  STransMsg rpcMsg;
   rpcMsg.contLen = transContLenFromMsg(pHead->msgLen);
   rpcMsg.pCont = pHead->content;
   rpcMsg.msgType = pHead->msgType;
@@ -260,7 +259,7 @@ void uvOnRecvCb(uv_stream_t* cli, ssize_t nread, const uv_buf_t* buf) {
   }
 
   tError("server conn %p read error: %s", conn, uv_err_name(nread));
-  if (nread < 0 || nread == UV_EOF) {
+  if (nread < 0) {
     conn->broken = true;
     transUnrefSrvHandle(conn);
 
@@ -318,8 +317,8 @@ static void uvPrepareSendData(SSrvMsg* smsg, uv_buf_t* wb) {
   // impl later;
   tTrace("server conn %p prepare to send resp", smsg->pConn);
 
-  SSrvConn* pConn = smsg->pConn;
-  SRpcMsg*  pMsg = &smsg->msg;
+  SSrvConn*  pConn = smsg->pConn;
+  STransMsg* pMsg = &smsg->msg;
   if (pMsg->pCont == 0) {
     pMsg->pCont = (void*)rpcMallocCont(0);
     pMsg->contLen = 0;
@@ -547,7 +546,7 @@ static bool addHandleToWorkloop(void* arg) {
     return false;
   }
 
-  // SRpcInfo* pRpc = pThrd->shandle;
+  // STrans* pRpc = pThrd->shandle;
   uv_pipe_init(pThrd->loop, pThrd->pipe, 1);
   uv_pipe_open(pThrd->pipe, pThrd->fd);
 
@@ -668,7 +667,7 @@ static int transAddAuthPart(SSrvConn* pConn, char* msg, int msgLen) {
   return msgLen;
 }
 
-void* taosInitServer(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle) {
+void* transInitServer(uint32_t ip, uint32_t port, char* label, int numOfThreads, void* fp, void* shandle) {
   SServerObj* srv = calloc(1, sizeof(SServerObj));
   srv->loop = (uv_loop_t*)malloc(sizeof(uv_loop_t));
   srv->numOfThreads = numOfThreads;
@@ -720,7 +719,7 @@ void* taosInitServer(uint32_t ip, uint32_t port, char* label, int numOfThreads,
 
   return srv;
 End:
-  taosCloseServer(srv);
+  transCloseServer(srv);
   return NULL;
 }
 
@@ -740,7 +739,7 @@ void sendQuitToWorkThrd(SWorkThrdObj* pThrd) {
   transSendAsync(pThrd->asyncPool, &srvMsg->q);
 }
 
-void taosCloseServer(void* arg) {
+void transCloseServer(void* arg) {
   // impl later
   SServerObj* srv = arg;
   for (int i = 0; i < srv->numOfThreads; i++) {
@@ -786,7 +785,7 @@ void transUnrefSrvHandle(void* handle) {
   }
   // unref srv handle
 }
-void rpcSendResponse(const SRpcMsg* pMsg) {
+void transSendResponse(const STransMsg* pMsg) {
   if (pMsg->handle == NULL) {
     return;
   }
@@ -799,14 +798,12 @@ void rpcSendResponse(const SRpcMsg* pMsg) {
   tTrace("server conn %p start to send resp", pConn);
   transSendAsync(pThrd->asyncPool, &srvMsg->q);
 }
-
-int rpcGetConnInfo(void* thandle, SRpcConnInfo* pInfo) {
-  SSrvConn* pConn = thandle;
-
+int transGetConnInfo(void* thandle, STransHandleInfo* pInfo) {
+  SSrvConn*          pConn = thandle;
   struct sockaddr_in addr = pConn->addr;
+
   pInfo->clientIp = (uint32_t)(addr.sin_addr.s_addr);
   pInfo->clientPort = ntohs(addr.sin_port);
-
   tstrncpy(pInfo->user, pConn->user, sizeof(pInfo->user));
   return 0;
 }
diff --git a/source/os/src/osLocale.c b/source/os/src/osLocale.c
index 47546f7deb2ddaf03106fd63e6f82a716f23a7fd..e9d6ed7c5424aff687175391942171f57c43c5f8 100644
--- a/source/os/src/osLocale.c
+++ b/source/os/src/osLocale.c
@@ -13,6 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#define ALLOW_FORBID_FUNC
 #define _DEFAULT_SOURCE
 #include "osLocale.h"
 
diff --git a/tests/script/sh/massiveTable/compileVersion.sh b/tests/script/sh/massiveTable/compileVersion.sh
index 787da09b85dea03311795b828a209bf8c7468be4..c6c92bf72458c110ffa25a0127468d0bf2723c99 100755
--- a/tests/script/sh/massiveTable/compileVersion.sh
+++ b/tests/script/sh/massiveTable/compileVersion.sh
@@ -45,10 +45,6 @@ function gitPullBranchInfo () {
   git pull origin $branch_name ||:
   echo "==== git pull $branch_name end ===="
   git pull --recurse-submodules
-  cd tests
-  git checkout $branch_name
-  git pull
-  cd ..
 }
 
 function compileTDengineVersion() {