diff --git a/include/common/tglobal.h b/include/common/tglobal.h
index 6fde7b48a2..44276102cf 100644
--- a/include/common/tglobal.h
+++ b/include/common/tglobal.h
@@ -122,7 +122,7 @@ extern bool    tsUseAdapter;
 // client
 extern int32_t tsMinSlidingTime;
 extern int32_t tsMinIntervalTime;
-extern int32_t tsMaxMemUsedByInsert;
+extern int32_t tsMaxInsertBatchRows;
 
 // build info
 extern char version[];
diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index b85dfa80b0..bef63d8a49 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -148,8 +148,8 @@ int32_t tsMaxNumOfDistinctResults = 1000 * 10000;
 // 1 database precision unit for interval time range, changed accordingly
 int32_t tsMinIntervalTime = 1;
 
-// maximum memory allowed to be allocated for a single csv load (in MB)
-int32_t tsMaxMemUsedByInsert = 1024;
+// maximum batch rows numbers imported from a single csv load
+int32_t tsMaxInsertBatchRows = 1000000;
 
 float   tsSelectivityRatio = 1.0;
 int32_t tsTagFilterResCacheSize = 1024 * 10;
@@ -340,7 +340,7 @@ static int32_t taosAddClientCfg(SConfig *pCfg) {
   if (cfgAddString(pCfg, "smlTagName", tsSmlTagName, 1) != 0) return -1;
   //  if (cfgAddBool(pCfg, "smlDataFormat", tsSmlDataFormat, 1) != 0) return -1;
   //  if (cfgAddInt32(pCfg, "smlBatchSize", tsSmlBatchSize, 1, INT32_MAX, true) != 0) return -1;
-  if (cfgAddInt32(pCfg, "maxMemUsedByInsert", tsMaxMemUsedByInsert, 1, INT32_MAX, true) != 0) return -1;
+  if (cfgAddInt32(pCfg, "maxInsertBatchRows", tsMaxInsertBatchRows, 1, INT32_MAX, true) != 0) return -1;
   if (cfgAddInt32(pCfg, "maxRetryWaitTime", tsMaxRetryWaitTime, 0, 86400000, 0) != 0) return -1;
   if (cfgAddBool(pCfg, "useAdapter", tsUseAdapter, true) != 0) return -1;
   if (cfgAddBool(pCfg, "crashReporting", tsEnableCrashReport, true) != 0) return -1;
@@ -725,7 +725,7 @@ static int32_t taosSetClientCfg(SConfig *pCfg) {
   //  tsSmlDataFormat = cfgGetItem(pCfg, "smlDataFormat")->bval;
 
   //  tsSmlBatchSize = cfgGetItem(pCfg, "smlBatchSize")->i32;
-  tsMaxMemUsedByInsert = cfgGetItem(pCfg, "maxMemUsedByInsert")->i32;
+  tsMaxInsertBatchRows = cfgGetItem(pCfg, "maxInsertBatchRows")->i32;
 
   tsShellActivityTimer = cfgGetItem(pCfg, "shellActivityTimer")->i32;
   tsCompressMsgSize = cfgGetItem(pCfg, "compressMsgSize")->i32;
@@ -987,7 +987,7 @@ int32_t taosSetCfg(SConfig *pCfg, char *name) {
           } else if (strcasecmp("maxNumOfDistinctRes", name) == 0) {
             tsMaxNumOfDistinctResults = cfgGetItem(pCfg, "maxNumOfDistinctRes")->i32;
           } else if (strcasecmp("maxMemUsedByInsert", name) == 0) {
-            tsMaxMemUsedByInsert = cfgGetItem(pCfg, "maxMemUsedByInsert")->i32;
+            tsMaxInsertBatchRows = cfgGetItem(pCfg, "maxInsertBatchRows")->i32;
           } else if (strcasecmp("maxRetryWaitTime", name) == 0) {
             tsMaxRetryWaitTime = cfgGetItem(pCfg, "maxRetryWaitTime")->i32;
           }
diff --git a/source/libs/parser/src/parInsertSql.c b/source/libs/parser/src/parInsertSql.c
index 02de9f227d..6751b34d8e 100644
--- a/source/libs/parser/src/parInsertSql.c
+++ b/source/libs/parser/src/parInsertSql.c
@@ -1552,7 +1552,7 @@ static int32_t parseCsvFile(SInsertParseContext* pCxt, SVnodeModifyOpStmt* pStmt
       (*pNumOfRows)++;
     }
 
-    if (TSDB_CODE_SUCCESS == code && (*pNumOfRows) > tsMaxMemUsedByInsert * 1024 * 1024) {
+    if (TSDB_CODE_SUCCESS == code && (*pNumOfRows) > tsMaxInsertBatchRows) {
       pStmt->fileProcessing = true;
       break;
     }
@@ -1561,6 +1561,8 @@ static int32_t parseCsvFile(SInsertParseContext* pCxt, SVnodeModifyOpStmt* pStmt
   }
   taosMemoryFree(pLine);
 
+  parserDebug("0x%" PRIx64 " %d rows have been parsed", pCxt->pComCxt->requestId, *pNumOfRows);
+
   if (TSDB_CODE_SUCCESS == code && 0 == (*pNumOfRows) &&
       (!TSDB_QUERY_HAS_TYPE(pStmt->insertType, TSDB_QUERY_TYPE_STMT_INSERT)) && !pStmt->fileProcessing) {
     code = buildSyntaxErrMsg(&pCxt->msg, "no any data points", NULL);
diff --git a/source/libs/parser/src/parInsertUtil.c b/source/libs/parser/src/parInsertUtil.c
index f921094752..952a927136 100644
--- a/source/libs/parser/src/parInsertUtil.c
+++ b/source/libs/parser/src/parInsertUtil.c
@@ -272,6 +272,41 @@ static int32_t createTableDataCxt(STableMeta* pTableMeta, SVCreateTbReq** pCreat
   return code;
 }
 
+static int32_t rebuildTableData(SSubmitTbData* pSrc, SSubmitTbData** pDst) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  SSubmitTbData* pTmp = taosMemoryCalloc(1, sizeof(SSubmitTbData));
+  if (NULL == pTmp) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+  } else {
+    pTmp->flags = pSrc->flags;
+    pTmp->suid = pSrc->suid;
+    pTmp->uid = pSrc->uid;
+    pTmp->sver = pSrc->sver;
+    pTmp->pCreateTbReq = pSrc->pCreateTbReq;
+    if (pTmp->flags & SUBMIT_REQ_COLUMN_DATA_FORMAT) {
+      pTmp->aCol = taosArrayInit(128, sizeof(SColData));
+      if (NULL == pTmp->aCol) {
+        code = TSDB_CODE_OUT_OF_MEMORY;
+        taosMemoryFree(pTmp);
+      }
+    } else {
+      pTmp->aRowP = taosArrayInit(128, POINTER_BYTES);
+      if (NULL == pTmp->aRowP) {
+        code = TSDB_CODE_OUT_OF_MEMORY;
+        taosMemoryFree(pTmp);
+      }
+    }
+  }
+
+  taosMemoryFree(pSrc);
+  if (TSDB_CODE_SUCCESS == code) {
+    *pDst = pTmp;
+  }
+  
+  return code;
+}
+
+
 static void resetColValues(SArray* pValues) {
   int32_t num = taosArrayGetSize(pValues);
   for (int32_t i = 0; i < num; ++i) {
@@ -381,7 +416,7 @@ static int32_t fillVgroupDataCxt(STableDataCxt* pTableCxt, SVgroupDataCxt* pVgCx
     }
   }
   taosArrayPush(pVgCxt->pData->aSubmitTbData, pTableCxt->pData);
-  taosMemoryFreeClear(pTableCxt->pData);
+  rebuildTableData(pTableCxt->pData, &pTableCxt->pData);
 
   qDebug("add tableDataCxt uid:%" PRId64 " to vgId:%d", pTableCxt->pMeta->uid, pVgCxt->vgId);