[td-4209]<fix>: add the uid check for super table metadata that is already cached in local buffer.

src/client/inc/tscUtil.h

@@ -298,7 +298,7 @@ STableMeta* createSuperTableMeta(STableMetaMsg* pChild);
 uint32_t tscGetTableMetaSize(STableMeta* pTableMeta);
 CChildTableMeta* tscCreateChildMeta(STableMeta* pTableMeta);
 uint32_t tscGetTableMetaMaxSize();
-int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name, void* buf);
+int32_t tscCreateTableMetaFromSTableMeta(STableMeta* pChild, const char* name, void* buf);
 STableMeta* tscTableMetaDup(STableMeta* pTableMeta);
 
 

src/client/inc/tsclient.h

@@ -67,14 +67,16 @@ typedef struct CChildTableMeta {
   int32_t        vgId;
   STableId       id;
   uint8_t        tableType;
-  char           sTableName[TSDB_TABLE_FNAME_LEN];  //super table name, not full name
+  char           sTableName[TSDB_TABLE_FNAME_LEN];  // TODO: refactor super table name, not full name
+  uint64_t       suid;                              // super table id
 } CChildTableMeta;
 
 typedef struct STableMeta {
   int32_t        vgId;
   STableId       id;
   uint8_t        tableType;
-  char           sTableName[TSDB_TABLE_FNAME_LEN];
+  char           sTableName[TSDB_TABLE_FNAME_LEN];  // super table name
+  uint64_t       suid;       // super table id
   int16_t        sversion;
   int16_t        tversion;
   STableComInfo  tableInfo;

src/client/src/tscSchemaUtil.c

@@ -94,6 +94,7 @@ STableMeta* tscCreateTableMetaFromMsg(STableMetaMsg* pTableMetaMsg) {
 
   pTableMeta->tableType = pTableMetaMsg->tableType;
   pTableMeta->vgId      = pTableMetaMsg->vgroup.vgId;
+  pTableMeta->suid      = pTableMetaMsg->suid;
 
   pTableMeta->tableInfo = (STableComInfo) {
     .numOfTags    = pTableMetaMsg->numOfTags,

src/client/src/tscServer.c

@@ -1924,8 +1924,8 @@ int tscProcessTableMetaRsp(SSqlObj *pSql) {
   pMetaMsg->sversion    = htons(pMetaMsg->sversion);
   pMetaMsg->tversion    = htons(pMetaMsg->tversion);
   pMetaMsg->vgroup.vgId = htonl(pMetaMsg->vgroup.vgId);
-  
   pMetaMsg->uid         = htobe64(pMetaMsg->uid);
+  pMetaMsg->suid        = htobe64(pMetaMsg->suid);
   pMetaMsg->contLen     = htons(pMetaMsg->contLen);
   pMetaMsg->numOfColumns = htons(pMetaMsg->numOfColumns);
   
@@ -2542,13 +2542,10 @@ int32_t tscGetTableMeta(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo) {
       return TSDB_CODE_TSC_OUT_OF_MEMORY;
     }
     pTableMetaInfo->pTableMeta = (STableMeta *)tmp;
+  }
+
   memset(pTableMetaInfo->pTableMeta, 0, size);
   pTableMetaInfo->tableMetaSize = size;
-  } else {
-    //uint32_t s = tscGetTableMetaSize(pTableMetaInfo->pTableMeta);
-    memset(pTableMetaInfo->pTableMeta, 0, size);
-    pTableMetaInfo->tableMetaSize = size;
-  }
 
   pTableMetaInfo->pTableMeta->tableType = -1;
   pTableMetaInfo->pTableMeta->tableInfo.numOfColumns  = -1;
@@ -2565,8 +2562,9 @@ int32_t tscGetTableMeta(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo) {
 
   STableMeta* pMeta = pTableMetaInfo->pTableMeta;
   if (pMeta->id.uid > 0) {
+    // in case of child table, here only get the
     if (pMeta->tableType == TSDB_CHILD_TABLE) {
-      int32_t code = tscCreateTableMetaFromCChildMeta(pTableMetaInfo->pTableMeta, name, buf);
+      int32_t code = tscCreateTableMetaFromSTableMeta(pTableMetaInfo->pTableMeta, name, buf);
       if (code != TSDB_CODE_SUCCESS) {
         return getTableMetaFromMnode(pSql, pTableMetaInfo);
       }

src/client/src/tscUtil.c

@@ -2941,22 +2941,25 @@ CChildTableMeta* tscCreateChildMeta(STableMeta* pTableMeta) {
   assert(pTableMeta != NULL);
 
   CChildTableMeta* cMeta = calloc(1, sizeof(CChildTableMeta));
+
   cMeta->tableType = TSDB_CHILD_TABLE;
   cMeta->vgId      = pTableMeta->vgId;
   cMeta->id        = pTableMeta->id;
+  cMeta->suid      = pTableMeta->suid;
   tstrncpy(cMeta->sTableName, pTableMeta->sTableName, TSDB_TABLE_FNAME_LEN);
 
   return cMeta;
 }
 
-int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name, void* buf) {
+int32_t tscCreateTableMetaFromSTableMeta(STableMeta* pChild, const char* name, void* buf) {
   assert(pChild != NULL && buf != NULL);
 
-//  uint32_t size = tscGetTableMetaMaxSize();
-  STableMeta* p = buf;//calloc(1, size);
-
+  STableMeta* p = buf;
   taosHashGetClone(tscTableMetaInfo, pChild->sTableName, strnlen(pChild->sTableName, TSDB_TABLE_FNAME_LEN), NULL, p, -1);
-  if (p->id.uid > 0) { // tableMeta exists, build child table meta and return
+
+  // tableMeta exists, build child table meta according to the super table meta
+  // the uid need to be checked in addition to the general name of the super table.
+  if (p->id.uid > 0 && pChild->suid == p->id.uid) {
     pChild->sversion = p->sversion;
     pChild->tversion = p->tversion;
 
@@ -2964,13 +2967,9 @@ int32_t tscCreateTableMetaFromCChildMeta(STableMeta* pChild, const char* name, v
     int32_t total = pChild->tableInfo.numOfColumns + pChild->tableInfo.numOfTags;
 
     memcpy(pChild->schema, p->schema, sizeof(SSchema) *total);
-
-//    tfree(p);
     return TSDB_CODE_SUCCESS;
   } else { // super table has been removed, current tableMeta is also expired. remove it here
     taosHashRemove(tscTableMetaInfo, name, strnlen(name, TSDB_TABLE_FNAME_LEN));
-
-//    tfree(p);
     return -1;
   }
 }