diff --git a/source/client/inc/clientSml.h b/source/client/inc/clientSml.h
index f9cbffa7480b2e728c767e7a54d648363af10349..c9eb95101495abda29f88e6876464560b94b849a 100644
--- a/source/client/inc/clientSml.h
+++ b/source/client/inc/clientSml.h
@@ -251,7 +251,7 @@ int32_t           smlClearForRerun(SSmlHandle *info);
 int32_t           smlParseValue(SSmlKv *pVal, SSmlMsgBuf *msg);
 uint8_t           smlGetTimestampLen(int64_t num);
 void              clearColValArray(SArray* pCols);
-void              smlDestroyTableInfo(SSmlHandle *info, SSmlTableInfo *tag);
+void              smlDestroyTableInfo(void *para);
 
 void freeSSmlKv(void* data);
 int32_t smlParseInfluxString(SSmlHandle *info, char *sql, char *sqlEnd, SSmlLineInfo *elements);
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 82177302c7f09a7166ee088a5cf69f44bfd752b9..5963e419e1cd504c2d9d39fa1634e6d1a75a346a 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -1757,6 +1757,7 @@ static int32_t doConvertJson(SReqResultInfo* pResultInfo, int32_t numOfCols, int
     return TSDB_CODE_TSC_INTERNAL_ERROR;
   }
 
+  taosMemoryFreeClear(pResultInfo->convertJson);
   pResultInfo->convertJson = taosMemoryCalloc(1, dataLen);
   if (pResultInfo->convertJson == NULL) return TSDB_CODE_OUT_OF_MEMORY;
   char* p1 = pResultInfo->convertJson;
diff --git a/source/client/src/clientSml.c b/source/client/src/clientSml.c
index 97f72ce872927b7084b6e6a1c9993a36100dcd1f..bea237d09eaa28c1c32b8e7006734992c561221d 100644
--- a/source/client/src/clientSml.c
+++ b/source/client/src/clientSml.c
@@ -230,6 +230,16 @@ void getTableUid(SSmlHandle *info, SSmlLineInfo *currElement, SSmlTableInfo *tin
   }
 }
 
+static void smlDestroySTableMeta(void *para) {
+  SSmlSTableMeta *meta = *(SSmlSTableMeta**)para;
+  taosHashCleanup(meta->tagHash);
+  taosHashCleanup(meta->colHash);
+  taosArrayDestroy(meta->tags);
+  taosArrayDestroy(meta->cols);
+  taosMemoryFreeClear(meta->tableMeta);
+  taosMemoryFree(meta);
+}
+
 SSmlSTableMeta *smlBuildSTableMeta(bool isDataFormat) {
   SSmlSTableMeta *meta = (SSmlSTableMeta *)taosMemoryCalloc(sizeof(SSmlSTableMeta), 1);
   if (!meta) {
@@ -264,7 +274,7 @@ SSmlSTableMeta *smlBuildSTableMeta(bool isDataFormat) {
   return meta;
 
 cleanup:
-  taosMemoryFree(meta);
+  smlDestroySTableMeta(meta);
   return NULL;
 }
 
@@ -1035,6 +1045,7 @@ static int32_t smlModifyDBSchemas(SSmlHandle *info) {
       }
     }
 
+    taosMemoryFreeClear(sTableData->tableMeta);
     sTableData->tableMeta = pTableMeta;
     uDebug("SML:0x%" PRIx64 "modify schema uid:%" PRIu64 ", sversion:%d, tversion:%d", info->id, pTableMeta->uid,
            pTableMeta->sversion, pTableMeta->tversion) tmp = (SSmlSTableMeta **)taosHashIterate(info->superTables, tmp);
@@ -1093,15 +1104,6 @@ static void smlInsertMeta(SHashObj *metaHash, SArray *metaArray, SArray *cols) {
   }
 }
 
-static void smlDestroySTableMeta(SSmlSTableMeta *meta) {
-  taosHashCleanup(meta->tagHash);
-  taosHashCleanup(meta->colHash);
-  taosArrayDestroy(meta->tags);
-  taosArrayDestroy(meta->cols);
-  taosMemoryFree(meta->tableMeta);
-  taosMemoryFree(meta);
-}
-
 static int32_t smlUpdateMeta(SHashObj *metaHash, SArray *metaArray, SArray *cols, bool isTag, SSmlMsgBuf *msg) {
   for (int i = 0; i < taosArrayGetSize(cols); ++i) {
     SSmlKv *kv = (SSmlKv *)taosArrayGet(cols, i);
@@ -1141,7 +1143,8 @@ static int32_t smlUpdateMeta(SHashObj *metaHash, SArray *metaArray, SArray *cols
   return TSDB_CODE_SUCCESS;
 }
 
-void smlDestroyTableInfo(SSmlHandle *info, SSmlTableInfo *tag) {
+void smlDestroyTableInfo(void *para) {
+  SSmlTableInfo *tag = *(SSmlTableInfo**)para;
   for (size_t i = 0; i < taosArrayGetSize(tag->cols); i++) {
     SHashObj *kvHash = (SHashObj *)taosArrayGetP(tag->cols, i);
     taosHashCleanup(kvHash);
@@ -1178,18 +1181,18 @@ void smlDestroyInfo(SSmlHandle *info) {
   qDestroyQuery(info->pQuery);
 
   // destroy info->childTables
-  SSmlTableInfo **oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, NULL);
-  while (oneTable) {
-    smlDestroyTableInfo(info, *oneTable);
-    oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, oneTable);
-  }
+//  SSmlTableInfo **oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, NULL);
+//  while (oneTable) {
+//    smlDestroyTableInfo(oneTable);
+//    oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, oneTable);
+//  }
 
   // destroy info->superTables
-  SSmlSTableMeta **oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, NULL);
-  while (oneSTable) {
-    smlDestroySTableMeta(*oneSTable);
-    oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, oneSTable);
-  }
+//  SSmlSTableMeta **oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, NULL);
+//  while (oneSTable) {
+//    smlDestroySTableMeta(*oneSTable);
+//    oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, oneSTable);
+//  }
 
   // destroy info->pVgHash
   taosHashCleanup(info->pVgHash);
@@ -1248,6 +1251,8 @@ SSmlHandle *smlBuildSmlInfo(TAOS *taos) {
   info->childTables = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
   info->tableUids = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
   info->superTables = taosHashInit(16, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), true, HASH_NO_LOCK);
+  taosHashSetFreeFp(info->superTables, smlDestroySTableMeta);
+  taosHashSetFreeFp(info->childTables, smlDestroyTableInfo);
 
   info->id = smlGenId();
   info->pQuery = smlInitHandle();
@@ -1354,6 +1359,9 @@ static int32_t smlParseLineBottom(SSmlHandle *info) {
       uDebug("SML:0x%" PRIx64 " smlParseLineBottom add meta, format:%d, linenum:%d", info->id, info->dataFormat,
              info->lineNum);
       SSmlSTableMeta *meta = smlBuildSTableMeta(info->dataFormat);
+      if(meta == NULL){
+        return TSDB_CODE_OUT_OF_MEMORY;
+      }
       taosHashPut(info->superTables, elements->measure, elements->measureLen, &meta, POINTER_BYTES);
       terrno = 0;
       smlInsertMeta(meta->tagHash, meta->tags, tinfo->tags);
@@ -1473,18 +1481,18 @@ static void smlPrintStatisticInfo(SSmlHandle *info) {
 int32_t smlClearForRerun(SSmlHandle *info) {
   info->reRun = false;
   // clear info->childTables
-  SSmlTableInfo **oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, NULL);
-  while (oneTable) {
-    smlDestroyTableInfo(info, *oneTable);
-    oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, oneTable);
-  }
+//  SSmlTableInfo **oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, NULL);
+//  while (oneTable) {
+//    smlDestroyTableInfo(info, *oneTable);
+//    oneTable = (SSmlTableInfo **)taosHashIterate(info->childTables, oneTable);
+//  }
 
   // clear info->superTables
-  SSmlSTableMeta **oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, NULL);
-  while (oneSTable) {
-    smlDestroySTableMeta(*oneSTable);
-    oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, oneSTable);
-  }
+//  SSmlSTableMeta **oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, NULL);
+//  while (oneSTable) {
+//    smlDestroySTableMeta(*oneSTable);
+//    oneSTable = (SSmlSTableMeta **)taosHashIterate(info->superTables, oneSTable);
+//  }
 
   taosHashClear(info->childTables);
   taosHashClear(info->superTables);
diff --git a/source/client/src/clientSmlJson.c b/source/client/src/clientSmlJson.c
index 7ccf9309648583cd9610a6375fc717297fc7352d..0f59505f8c02c64543ebb674c8ad86ae996a3f0f 100644
--- a/source/client/src/clientSmlJson.c
+++ b/source/client/src/clientSmlJson.c
@@ -695,6 +695,10 @@ static int32_t smlParseTagsFromJSON(SSmlHandle *info, cJSON *tags, SSmlLineInfo
           return TSDB_CODE_SUCCESS;
         }
         sMeta = smlBuildSTableMeta(info->dataFormat);
+        if(sMeta == NULL){
+          taosMemoryFreeClear(pTableMeta);
+          return TSDB_CODE_OUT_OF_MEMORY;
+        }
         sMeta->tableMeta = pTableMeta;
         taosHashPut(info->superTables, elements->measure, elements->measureLen, &sMeta, POINTER_BYTES);
         for(int i = pTableMeta->tableInfo.numOfColumns; i < pTableMeta->tableInfo.numOfTags + pTableMeta->tableInfo.numOfColumns; i++){
@@ -784,7 +788,7 @@ static int32_t smlParseTagsFromJSON(SSmlHandle *info, cJSON *tags, SSmlLineInfo
       tinfo->tableDataCtx = smlInitTableDataCtx(info->pQuery, info->currSTableMeta);
       if (tinfo->tableDataCtx == NULL) {
         smlBuildInvalidDataMsg(&info->msgBuf, "smlInitTableDataCtx error", NULL);
-        smlDestroyTableInfo(info, tinfo);
+        smlDestroyTableInfo(&tinfo);
         return TSDB_CODE_SML_INVALID_DATA;
       }
     }
@@ -1048,12 +1052,18 @@ static int32_t smlParseJSONExt(SSmlHandle *info, char *payload) {
     return TSDB_CODE_TSC_INVALID_JSON;
   }
 
-  info->lineNum = payloadNum;
-  info->dataFormat = true;
+
   if (unlikely(info->lines != NULL)) {
+    for (int i = 0; i < info->lineNum; i++) {
+      taosArrayDestroyEx(info->lines[i].colArray, freeSSmlKv);
+      if (info->lines[i].measureTagsLen != 0) taosMemoryFree(info->lines[i].measureTag);
+    }
     taosMemoryFree(info->lines);
     info->lines = NULL;
   }
+  info->lineNum = payloadNum;
+  info->dataFormat = true;
+
   ret = smlClearForRerun(info);
   if (ret != TSDB_CODE_SUCCESS) {
     return ret;
diff --git a/source/client/src/clientSmlLine.c b/source/client/src/clientSmlLine.c
index e79093398e87275a2eabc9bb382c8987a41f1703..40e014458e815a68de4dccac310ee1ac9442bcaf 100644
--- a/source/client/src/clientSmlLine.c
+++ b/source/client/src/clientSmlLine.c
@@ -168,6 +168,10 @@ static int32_t smlParseTagKv(SSmlHandle *info, char **sql, char *sqlEnd, SSmlLin
           return TSDB_CODE_SUCCESS;
         }
         sMeta = smlBuildSTableMeta(info->dataFormat);
+        if(sMeta == NULL){
+          taosMemoryFreeClear(pTableMeta);
+          return TSDB_CODE_OUT_OF_MEMORY;
+        }
         sMeta->tableMeta = pTableMeta;
         taosHashPut(info->superTables, currElement->measure, currElement->measureLen, &sMeta, POINTER_BYTES);
         for (int i = pTableMeta->tableInfo.numOfColumns;
@@ -326,7 +330,7 @@ static int32_t smlParseTagKv(SSmlHandle *info, char **sql, char *sqlEnd, SSmlLin
     info->currSTableMeta->uid = tinfo->uid;
     tinfo->tableDataCtx = smlInitTableDataCtx(info->pQuery, info->currSTableMeta);
     if (tinfo->tableDataCtx == NULL) {
-      smlDestroyTableInfo(info, tinfo);
+      smlDestroyTableInfo(&tinfo);
       smlBuildInvalidDataMsg(&info->msgBuf, "smlInitTableDataCtx error", NULL);
       return TSDB_CODE_SML_INVALID_DATA;
     }
@@ -372,6 +376,10 @@ static int32_t smlParseColKv(SSmlHandle *info, char **sql, char *sqlEnd, SSmlLin
           return TSDB_CODE_SUCCESS;
         }
         *tmp = smlBuildSTableMeta(info->dataFormat);
+        if(*tmp == NULL){
+          taosMemoryFreeClear(pTableMeta);
+          return TSDB_CODE_OUT_OF_MEMORY;
+        }
         (*tmp)->tableMeta = pTableMeta;
         taosHashPut(info->superTables, currElement->measure, currElement->measureLen, tmp, POINTER_BYTES);
 
diff --git a/source/client/src/clientSmlTelnet.c b/source/client/src/clientSmlTelnet.c
index 42b8001e5981a781fdf341754dbf07618d342855..b3f45a3107a239ba9f4b38161fd77a0635ca2879 100644
--- a/source/client/src/clientSmlTelnet.c
+++ b/source/client/src/clientSmlTelnet.c
@@ -91,6 +91,10 @@ static int32_t smlParseTelnetTags(SSmlHandle *info, char *data, char *sqlEnd, SS
           return TSDB_CODE_SUCCESS;
         }
         sMeta = smlBuildSTableMeta(info->dataFormat);
+        if(sMeta == NULL){
+          taosMemoryFreeClear(pTableMeta);
+          return TSDB_CODE_OUT_OF_MEMORY;
+        }
         sMeta->tableMeta = pTableMeta;
         taosHashPut(info->superTables, elements->measure, elements->measureLen, &sMeta, POINTER_BYTES);
         for(int i = pTableMeta->tableInfo.numOfColumns; i < pTableMeta->tableInfo.numOfTags + pTableMeta->tableInfo.numOfColumns; i++){
@@ -212,7 +216,7 @@ static int32_t smlParseTelnetTags(SSmlHandle *info, char *data, char *sqlEnd, SS
       tinfo->tableDataCtx = smlInitTableDataCtx(info->pQuery, info->currSTableMeta);
       if (tinfo->tableDataCtx == NULL) {
         smlBuildInvalidDataMsg(&info->msgBuf, "smlInitTableDataCtx error", NULL);
-        smlDestroyTableInfo(info, tinfo);
+        smlDestroyTableInfo(&tinfo);
         return TSDB_CODE_SML_INVALID_DATA;
       }
     }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 864513f15d5a5f1e01399c6ba28865a51d3ae1cd..39dab556f367fc91d0c02cfb88d34eecd05d69a8 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -8008,6 +8008,9 @@ static int32_t buildKVRowForAllTags(STranslateContext* pCxt, SCreateSubTableClau
       if (pTagSchema->type == TSDB_DATA_TYPE_JSON) {
         isJson = true;
         code = buildJsonTagVal(pCxt, pTagSchema, pVal, pTagArray, ppTag);
+        if (TSDB_CODE_SUCCESS != code) {
+          nodesDestroyNode((SNode*)pVal);
+        }
         taosArrayPush(tagName, pTagSchema->name);
       } else if (pVal->node.resType.type != TSDB_DATA_TYPE_NULL && !pVal->isNull) {
         char*   tmpVal = nodesGetValueFromNode(pVal);
@@ -8328,13 +8331,7 @@ static int32_t buildUpdateTagValReq(STranslateContext* pCxt, SAlterTableStmt* pS
     SArray* pTagVals = taosArrayInit(1, sizeof(STagVal));
     int32_t code = TSDB_CODE_SUCCESS;
     STag*   pTag = NULL;
-    do {
-      code = parseJsontoTagData(pStmt->pVal->literal, pTagVals, &pTag, &pCxt->msgBuf);
-      if (TSDB_CODE_SUCCESS != code) {
-        break;
-      }
-    } while (0);
-
+    code = parseJsontoTagData(pStmt->pVal->literal, pTagVals, &pTag, &pCxt->msgBuf);
     taosArrayDestroy(pTagVals);
     if (code != TSDB_CODE_SUCCESS) {
       return code;
diff --git a/source/libs/parser/src/parUtil.c b/source/libs/parser/src/parUtil.c
index 5597bd3df8ec08efca0420c8dde034e074313cd2..8fa92a9d2e0095a00eb94dddad411cd2e4081592 100644
--- a/source/libs/parser/src/parUtil.c
+++ b/source/libs/parser/src/parUtil.c
@@ -416,7 +416,7 @@ int32_t parseJsontoTagData(const char* json, SArray* pTagVals, STag** ppTag, voi
 end:
   taosHashCleanup(keyHash);
   if (retCode == TSDB_CODE_SUCCESS) {
-    tTagNew(pTagVals, 1, true, ppTag);
+    retCode = tTagNew(pTagVals, 1, true, ppTag);
   }
   for (int i = 0; i < taosArrayGetSize(pTagVals); ++i) {
     STagVal* p = (STagVal*)taosArrayGet(pTagVals, i);
diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index e0d94c0c55b082e7e82693052dd766cdd209e522..210f0b04e477d20e309e97e0b0be4f6070511994 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -571,7 +571,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/alter_replica.py -N 3
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/influxdb_line_taosc_insert.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/opentsdb_telnet_line_taosc_insert.py
-#,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/opentsdb_json_taosc_insert.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/opentsdb_json_taosc_insert.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/test_stmt_muti_insert_query.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/test_stmt_set_tbname_tag.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 1-insert/alter_stable.py
@@ -1089,7 +1089,7 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/timetruncate.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/diff.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/Timediff.py -Q 4
-#,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/json_tag.py -Q 4
+,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/json_tag.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/top.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/bottom.py -Q 4
 ,,y,system-test,./pytest.sh python3 ./test.py -f 2-query/percentile.py -Q 4