fix: new reseek callback to separate tsdb & cache readers

source/dnode/vnode/src/inc/tsdb.h

@@ -207,10 +207,12 @@ int32_t tsdbDecmprColData(uint8_t *pIn, SBlockCol *pBlockCol, int8_t cmprAlg, in
                           uint8_t **ppBuf);
 // tsdbMemTable ==============================================================================================
 // SMemTable
+typedef int32_t (*_tsdb_reseek_func_t)(void *pQHandle);
+
 int32_t  tsdbMemTableCreate(STsdb *pTsdb, SMemTable **ppMemTable);
 void     tsdbMemTableDestroy(SMemTable *pMemTable);
 STbData *tsdbGetTbDataFromMemTable(SMemTable *pMemTable, tb_uid_t suid, tb_uid_t uid);
-int32_t  tsdbRefMemTable(SMemTable *pMemTable, void *pQHandle, SQueryNode **ppNode);
+int32_t  tsdbRefMemTable(SMemTable *pMemTable, void *pQHandle, _tsdb_reseek_func_t reseek, SQueryNode **ppNode);
 int32_t  tsdbUnrefMemTable(SMemTable *pMemTable, SQueryNode *pNode);
 SArray  *tsdbMemTableGetTbDataArray(SMemTable *pMemTable);
 // STbDataIter
@@ -290,7 +292,7 @@ int32_t tsdbDelFReaderClose(SDelFReader **ppReader);
 int32_t tsdbReadDelData(SDelFReader *pReader, SDelIdx *pDelIdx, SArray *aDelData);
 int32_t tsdbReadDelIdx(SDelFReader *pReader, SArray *aDelIdx);
 // tsdbRead.c ==============================================================================================
-int32_t tsdbTakeReadSnap(STsdbReader *pReader, STsdbReadSnap **ppSnap);
+int32_t tsdbTakeReadSnap(STsdbReader *pReader, _tsdb_reseek_func_t reseek, STsdbReadSnap **ppSnap);
 void    tsdbUntakeReadSnap(STsdbReader *pReader, STsdbReadSnap *pSnap);
 // tsdbMerge.c ==============================================================================================
 int32_t tsdbMerge(STsdb *pTsdb);
@@ -362,9 +364,10 @@ struct STbData {
 };
 
 struct SQueryNode {
-  SQueryNode  *pNext;
-  SQueryNode **ppNext;
-  void        *pQHandle;
+  SQueryNode         *pNext;
+  SQueryNode        **ppNext;
+  void               *pQHandle;
+  _tsdb_reseek_func_t reseek;
 };
 
 struct SMemTable {

source/dnode/vnode/src/tsdb/tsdbCacheRead.c

@@ -194,6 +194,12 @@ static void freeItem(void* pItem) {
   }
 }
 
+static int32_t tsdbCacheQueryReseek(void* pQHandle) {
+  int32_t code = 0;
+
+  return code;
+}
+
 int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32_t* slotIds, SArray* pTableUidList) {
   if (pReader == NULL || pResBlock == NULL) {
     return TSDB_CODE_INVALID_PARA;
@@ -237,7 +243,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
     taosArrayPush(pLastCols, &p);
   }
 
-  tsdbTakeReadSnap(NULL, &pr->pReadSnap);
+  tsdbTakeReadSnap(NULL, tsdbCacheQueryReseek, &pr->pReadSnap);
   pr->pDataFReader = NULL;
   pr->pDataFReaderLast = NULL;
 

source/dnode/vnode/src/tsdb/tsdbMemTable.c

@@ -636,7 +636,7 @@ _err:
 
 int32_t tsdbGetNRowsInTbData(STbData *pTbData) { return pTbData->sl.size; }
 
-int32_t tsdbRefMemTable(SMemTable *pMemTable, void *pQHandle, SQueryNode **ppNode) {
+int32_t tsdbRefMemTable(SMemTable *pMemTable, void *pQHandle, _tsdb_reseek_func_t reseek, SQueryNode **ppNode) {
   int32_t code = 0;
 
   int32_t nRef = atomic_fetch_add_32(&pMemTable->nRef, 1);
@@ -649,6 +649,7 @@ int32_t tsdbRefMemTable(SMemTable *pMemTable, void *pQHandle, SQueryNode **ppNod
     goto _exit;
   }
   (*ppNode)->pQHandle = pQHandle;
+  (*ppNode)->reseek = reseek;
   (*ppNode)->pNext = pMemTable->qList.pNext;
   (*ppNode)->ppNext = &pMemTable->qList.pNext;
   pMemTable->qList.pNext->ppNext = &(*ppNode)->pNext;
@@ -714,8 +715,6 @@ _exit:
   return aTbDataP;
 }
 
-extern int32_t tsdbSetQueryReseek(void *pQHandle);
-
 int32_t tsdbRecycleMemTable(SMemTable *pMemTable) {
   int32_t code = 0;
 
@@ -725,11 +724,11 @@ int32_t tsdbRecycleMemTable(SMemTable *pMemTable) {
     SQueryNode *pNextNode = pNode->pNext;
 
     if (pNextNode == &pMemTable->qList) {
-      code = tsdbSetQueryReseek(pNode->pQHandle);
+      code = (*pNode->reseek)(pNode->pQHandle);
       if (code) goto _exit;
       break;
     } else {
-      code = tsdbSetQueryReseek(pNode->pQHandle);
+      code = (*pNode->reseek)(pNode->pQHandle);
       if (code) goto _exit;
       pNode = pMemTable->qList.pNext;
       ASSERT(pNode == pNextNode);

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -3489,6 +3489,8 @@ static int32_t doOpenReaderImpl(STsdbReader* pReader) {
 }
 
 // ====================================== EXPOSED APIs ======================================
+static int32_t tsdbSetQueryReseek(void* pQHandle);
+
 int32_t tsdbReaderOpen(SVnode* pVnode, SQueryTableDataCond* pCond, SArray* pTableList, STsdbReader** ppReader,
                        const char* idstr) {
   STimeWindow window = pCond->twindows;
@@ -3570,7 +3572,7 @@ int32_t tsdbReaderOpen(SVnode* pVnode, SQueryTableDataCond* pCond, SArray* pTabl
   }
 
   if (numOfTables > 0) {
-    code = tsdbTakeReadSnap(pReader, &pReader->pReadSnap);
+    code = tsdbTakeReadSnap(pReader, tsdbSetQueryReseek, &pReader->pReadSnap);
     if (code != TSDB_CODE_SUCCESS) {
       goto _err;
     }
@@ -4106,7 +4108,7 @@ int32_t tsdbGetTableSchema(SVnode* pVnode, int64_t uid, STSchema** pSchema, int6
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t tsdbTakeReadSnap(STsdbReader* pReader, STsdbReadSnap** ppSnap) {
+int32_t tsdbTakeReadSnap(STsdbReader* pReader, _tsdb_reseek_func_t reseek, STsdbReadSnap** ppSnap) {
   int32_t        code = 0;
   STsdb*         pTsdb = pReader->pTsdb;
   SVersionRange* pRange = &pReader->verRange;
@@ -4127,12 +4129,12 @@ int32_t tsdbTakeReadSnap(STsdbReader* pReader, STsdbReadSnap** ppSnap) {
 
   // take snapshot
   if (pTsdb->mem && (pRange->minVer <= pTsdb->mem->maxVer && pRange->maxVer >= pTsdb->mem->minVer)) {
-    tsdbRefMemTable(pTsdb->mem, pReader, &(*ppSnap)->pNode);
+    tsdbRefMemTable(pTsdb->mem, pReader, reseek, &(*ppSnap)->pNode);
     (*ppSnap)->pMem = pTsdb->mem;
   }
 
   if (pTsdb->imem && (pRange->minVer <= pTsdb->imem->maxVer && pRange->maxVer >= pTsdb->imem->minVer)) {
-    tsdbRefMemTable(pTsdb->imem, pReader, &(*ppSnap)->pINode);
+    tsdbRefMemTable(pTsdb->imem, pReader, reseek, &(*ppSnap)->pINode);
     (*ppSnap)->pIMem = pTsdb->imem;
   }
 
@@ -4173,7 +4175,7 @@ void tsdbUntakeReadSnap(STsdbReader* pReader, STsdbReadSnap* pSnap) {
   tsdbTrace("vgId:%d, untake read snapshot", TD_VID(pTsdb->pVnode));
 }
 
-int32_t tsdbSetQueryReseek(void* pQHandle) {
+static int32_t tsdbSetQueryReseek(void* pQHandle) {
   int32_t code = 0;
 
   // lock handle