cache/read: use new interface with signle query

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

@@ -273,6 +273,8 @@ int32_t tsdbCacheUpdate(STsdb *pTsdb, tb_uid_t suid, tb_uid_t uid, TSDBROW *pRow
         taosMemoryFree(value);
       }
     }
+
+    rocksdb_free(values_list[i]);
   }
   taosMemoryFree(values_list);
   taosMemoryFree(values_list_sizes);

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

@@ -199,7 +199,7 @@ void* tsdbCacherowsReaderClose(void* pReader) {
   taosMemoryFree(pReader);
   return NULL;
 }
-
+/*
 static int32_t doExtractCacheRow(SCacheRowsReader* pr, SLRUCache* lruCache, uint64_t uid, SArray** pRow,
                                  LRUHandle** h) {
   int32_t code = TSDB_CODE_SUCCESS;
@@ -222,7 +222,7 @@ static int32_t doExtractCacheRow(SCacheRowsReader* pr, SLRUCache* lruCache, uint
 
   return code;
 }
-
+*/
 static void freeItem(void* pItem) {
   SLastCol* pCol = (SLastCol*)pItem;
   if (IS_VAR_DATA_TYPE(pCol->colVal.type)) {
@@ -279,7 +279,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
     p->ts = INT64_MIN;
   }
 
-  pLastCols = taosArrayInit(pr->pSchema->numOfCols, sizeof(SLastCol));
+  pLastCols = taosArrayInit(pr->numOfCols, sizeof(SLastCol));
   if (pLastCols == NULL) {
     code = TSDB_CODE_OUT_OF_MEMORY;
     goto _end;
@@ -303,6 +303,8 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
   pr->pDataFReader = NULL;
   pr->pDataFReaderLast = NULL;
 
+  char const* lstring = pr->type & CACHESCAN_RETRIEVE_LAST ? "last" : "last_row";
+
   // retrieve the only one last row of all tables in the uid list.
   if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_SINGLE)) {
     int64_t st = taosGetTimestampUs();
@@ -310,16 +312,9 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
     for (int32_t i = 0; i < pr->numOfTables; ++i) {
       STableKeyInfo* pKeyInfo = &pr->pTableList[i];
 
-      code = doExtractCacheRow(pr, lruCache, pKeyInfo->uid, &pRow, &h);
-      if (code != TSDB_CODE_SUCCESS) {
-        goto _end;
-      }
-
-      if (h == NULL) {
-        continue;
-      }
-      if (taosArrayGetSize(pRow) <= 0) {
-        tsdbCacheRelease(lruCache, h);
+      tsdbCacheGet(pr->pTsdb, pKeyInfo->uid, &pRow, pr, lstring);
+      if (TARRAY_SIZE(pRow) <= 0) {
+        taosArrayDestroy(pRow);
         continue;
       }
 
@@ -327,20 +322,8 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
         bool    hasNotNullRow = true;
         int64_t singleTableLastTs = INT64_MAX;
         for (int32_t k = 0; k < pr->numOfCols; ++k) {
-          int32_t slotId = slotIds[k];
-
-          if (slotId == -1) {  // the primary timestamp
-            SLastCol* p = taosArrayGet(pLastCols, 0);
-            SLastCol* pCol = (SLastCol*)taosArrayGet(pRow, 0);
-            if (pCol->ts > p->ts) {
-              hasRes = true;
-              p->ts = pCol->ts;
-              p->colVal = pCol->colVal;
-              singleTableLastTs = pCol->ts;
-            }
-          } else {
-            SLastCol* p = taosArrayGet(pLastCols, slotId);
-            SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, slotId);
+          SLastCol* p = taosArrayGet(pLastCols, k);
+          SLastCol* pColVal = (SLastCol*)taosArrayGet(pRow, k);
 
           if (pColVal->ts > p->ts) {
             if (!COL_VAL_IS_VALUE(&pColVal->colVal) && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
@@ -370,7 +353,6 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
             }
           }
         }
-        }
 
         if (hasNotNullRow) {
           if (INT64_MAX == totalLastTs || (INT64_MAX != singleTableLastTs && totalLastTs < singleTableLastTs)) {
@@ -389,7 +371,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
         taosArraySet(pTableUidList, 0, &pKeyInfo->uid);
       }
 
-      tsdbCacheRelease(lruCache, h);
+      taosArrayDestroy(pRow);
     }
 
     if (hasRes) {
@@ -398,28 +380,10 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
   } else if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_ALL)) {
     for (int32_t i = pr->tableIndex; i < pr->numOfTables; ++i) {
       STableKeyInfo* pKeyInfo = &pr->pTableList[i];
-      /*
-      code = doExtractCacheRow(pr, lruCache, pKeyInfo->uid, &pRow, &h);
-      if (code != TSDB_CODE_SUCCESS) {
-        goto _end;
-      }
-
-      if (h == NULL) {
-        continue;
-      }
-      if (taosArrayGetSize(pRow) <= 0) {
-        tsdbCacheRelease(lruCache, h);
-        continue;
-      }
 
-      saveOneRow(pRow, pResBlock, pr, slotIds, pRes, pr->idstr);
-      // TODO reset the pRes
-      tsdbCacheRelease(lruCache, h);
-      */
-
-      char const* lstring = pr->type & CACHESCAN_RETRIEVE_LAST ? "last" : "last_row";
       tsdbCacheGet(pr->pTsdb, pKeyInfo->uid, &pRow, pr, lstring);
       if (TARRAY_SIZE(pRow) <= 0) {
+        taosArrayDestroy(pRow);
         continue;
       }