enh: optimizing stt file reading in last query

include/common/tmsg.h

@@ -1136,6 +1136,7 @@ typedef struct {
   int64_t numOfInsertSuccessReqs;
   int64_t numOfBatchInsertReqs;
   int64_t numOfBatchInsertSuccessReqs;
+  int32_t numOfCacheTables;
 } SVnodeLoad;
 
 typedef struct {

include/util/tlrucache.h

@@ -55,6 +55,8 @@ void *taosLRUCacheValue(SLRUCache *cache, LRUHandle *handle);
 size_t taosLRUCacheGetUsage(SLRUCache *cache);
 size_t taosLRUCacheGetPinnedUsage(SLRUCache *cache);
 
+int32_t taosLRUCacheGetElems(SLRUCache *cache);
+
 void   taosLRUCacheSetCapacity(SLRUCache *cache, size_t capacity);
 size_t taosLRUCacheGetCapacity(SLRUCache *cache);
 

source/dnode/vnode/inc/vnode.h

@@ -201,6 +201,7 @@ int32_t tsdbGetTableSchema(SVnode *pVnode, int64_t uid, STSchema **pSchema, int6
 void    tsdbCacheSetCapacity(SVnode *pVnode, size_t capacity);
 size_t  tsdbCacheGetCapacity(SVnode *pVnode);
 size_t  tsdbCacheGetUsage(SVnode *pVnode);
+int32_t tsdbCacheGetElems(SVnode *pVnode);
 
 // tq
 typedef struct SMetaTableInfo {

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

@@ -748,7 +748,7 @@ struct SDiskDataBuilder {
 
 int32_t tMergeTreeOpen(SMergeTree *pMTree, int8_t backward, SDataFReader *pFReader, uint64_t suid, uint64_t uid,
                        STimeWindow *pTimeWindow, SVersionRange *pVerRange, SSttBlockLoadInfo *pBlockLoadInfo,
-                       bool destroyLoadInfo, const char *idStr);
+                       bool destroyLoadInfo, const char *idStr, bool strictTimeRange);
 void    tMergeTreeAddIter(SMergeTree *pMTree, SLDataIter *pIter);
 bool    tMergeTreeNext(SMergeTree *pMTree);
 TSDBROW tMergeTreeGetRow(SMergeTree *pMTree);

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

@@ -632,8 +632,8 @@ static int32_t getNextRowFromFSLast(void *iter, TSDBROW **ppRow, bool *pIgnoreEa
       }
 
       tMergeTreeOpen(&state->mergeTree, 1, *state->pDataFReader, state->suid, state->uid,
-                     &(STimeWindow){.skey = TSKEY_MIN, .ekey = TSKEY_MAX},
+                     &(STimeWindow){.skey = state->lastTs, .ekey = TSKEY_MAX},
-                     &(SVersionRange){.minVer = 0, .maxVer = UINT64_MAX}, state->pLoadInfo, false, NULL);
+                     &(SVersionRange){.minVer = 0, .maxVer = UINT64_MAX}, state->pLoadInfo, false, NULL, true);
       state->pMergeTree = &state->mergeTree;
       bool hasVal = tMergeTreeNext(&state->mergeTree);
       if (!hasVal) {
@@ -1727,6 +1727,15 @@ size_t tsdbCacheGetUsage(SVnode *pVnode) {
   return usage;
 }
 
+int32_t tsdbCacheGetElems(SVnode *pVnode) {
+  int32_t elems = 0;
+  if (pVnode->pTsdb != NULL) {
+    elems = taosLRUCacheGetElems(pVnode->pTsdb->lruCache);
+  }
+
+  return elems;
+}
+
 static void getBICacheKey(int32_t fid, int64_t commitID, char *key, int *len) {
   struct {
     int32_t fid;

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

@@ -408,6 +408,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
 
         if (hasNotNullRow) {
           pr->lastTs = minTs;
+          tsdbInfo("%p have cache read %d tables", pr, i + 1);
         }
       }
 
@@ -418,6 +419,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
       saveOneRow(pLastCols, pResBlock, pr, slotIds, pRes, pr->idstr);
     }
 
+    tsdbInfo("have cached %d tables", taosLRUCacheGetElems(lruCache));
   } else if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_TYPE_ALL)) {
     for (int32_t i = pr->tableIndex; i < pr->numOfTables; ++i) {
       STableKeyInfo* pKeyInfo = &pr->pTableList[i];

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

@@ -31,7 +31,8 @@ struct SLDataIter {
   SSttBlockLoadInfo *pBlockLoadInfo;
 };
 
-SSttBlockLoadInfo *tCreateLastBlockLoadInfo(STSchema *pSchema, int16_t *colList, int32_t numOfCols, int32_t numOfSttTrigger) {
+SSttBlockLoadInfo *tCreateLastBlockLoadInfo(STSchema *pSchema, int16_t *colList, int32_t numOfCols,
+                                            int32_t numOfSttTrigger) {
   SSttBlockLoadInfo *pLoadInfo = taosMemoryCalloc(numOfSttTrigger, sizeof(SSttBlockLoadInfo));
   if (pLoadInfo == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
@@ -162,7 +163,8 @@ static SBlockData *loadLastBlock(SLDataIter *pIter, const char *idStr) {
   pInfo->blockIndex[pInfo->currentLoadBlockIndex] = pIter->iSttBlk;
   pIter->iRow = (pIter->backward) ? pInfo->blockData[pInfo->currentLoadBlockIndex].nRow : -1;
 
-  tsdbDebug("last block index list:%d, %d, rowIndex:%d %s", pInfo->blockIndex[0], pInfo->blockIndex[1], pIter->iRow, idStr);
+  tsdbDebug("last block index list:%d, %d, rowIndex:%d %s", pInfo->blockIndex[0], pInfo->blockIndex[1], pIter->iRow,
+            idStr);
   return &pInfo->blockData[pInfo->currentLoadBlockIndex];
 
 _exit:
@@ -263,7 +265,7 @@ static int32_t binarySearchForStartRowIndex(uint64_t *uidList, int32_t num, uint
 
 int32_t tLDataIterOpen(struct SLDataIter **pIter, SDataFReader *pReader, int32_t iStt, int8_t backward, uint64_t suid,
                        uint64_t uid, STimeWindow *pTimeWindow, SVersionRange *pRange, SSttBlockLoadInfo *pBlockLoadInfo,
-                       const char *idStr) {
+                       const char *idStr, bool strictTimeRange) {
   int32_t code = TSDB_CODE_SUCCESS;
 
   *pIter = taosMemoryCalloc(1, sizeof(SLDataIter));
@@ -340,6 +342,16 @@ int32_t tLDataIterOpen(struct SLDataIter **pIter, SDataFReader *pReader, int32_t
   if ((*pIter)->iSttBlk != -1) {
     (*pIter)->pSttBlk = taosArrayGet(pBlockLoadInfo->aSttBlk, (*pIter)->iSttBlk);
     (*pIter)->iRow = ((*pIter)->backward) ? (*pIter)->pSttBlk->nRow : -1;
+
+    if ((!backward) && ((strictTimeRange && (*pIter)->pSttBlk->minKey >= (*pIter)->timeWindow.ekey) ||
+                        (!strictTimeRange && (*pIter)->pSttBlk->minKey > (*pIter)->timeWindow.ekey))) {
+      (*pIter)->pSttBlk = NULL;
+    }
+
+    if (backward && ((strictTimeRange && (*pIter)->pSttBlk->maxKey <= (*pIter)->timeWindow.skey) ||
+                     (!strictTimeRange && (*pIter)->pSttBlk->maxKey < (*pIter)->timeWindow.skey))) {
+      (*pIter)->pSttBlk = NULL;
+    }
   }
 
   return code;
@@ -551,7 +563,7 @@ static FORCE_INLINE int32_t tLDataIterDescCmprFn(const SRBTreeNode *p1, const SR
 
 int32_t tMergeTreeOpen(SMergeTree *pMTree, int8_t backward, SDataFReader *pFReader, uint64_t suid, uint64_t uid,
                        STimeWindow *pTimeWindow, SVersionRange *pVerRange, SSttBlockLoadInfo *pBlockLoadInfo,
-                       bool destroyLoadInfo, const char *idStr) {
+                       bool destroyLoadInfo, const char *idStr, bool strictTimeRange) {
   pMTree->backward = backward;
   pMTree->pIter = NULL;
   pMTree->pIterList = taosArrayInit(4, POINTER_BYTES);
@@ -573,7 +585,7 @@ int32_t tMergeTreeOpen(SMergeTree *pMTree, int8_t backward, SDataFReader *pFRead
   for (int32_t i = 0; i < pFReader->pSet->nSttF; ++i) {  // open all last file
     struct SLDataIter *pIter = NULL;
     code = tLDataIterOpen(&pIter, pFReader, i, pMTree->backward, suid, uid, pTimeWindow, pVerRange,
-                          &pMTree->pLoadInfo[i], pMTree->idStr);
+                          &pMTree->pLoadInfo[i], pMTree->idStr, strictTimeRange);
     if (code != TSDB_CODE_SUCCESS) {
       goto _end;
     }

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

@@ -2481,7 +2481,7 @@ static bool initLastBlockReader(SLastBlockReader* pLBlockReader, STableBlockScan
             pScanInfo->uid, pReader->idStr);
   int32_t code = tMergeTreeOpen(&pLBlockReader->mergeTree, (pLBlockReader->order == TSDB_ORDER_DESC),
                                 pReader->pFileReader, pReader->suid, pScanInfo->uid, &w, &pLBlockReader->verRange,
-                                pLBlockReader->pInfo, false, pReader->idStr);
+                                pLBlockReader->pInfo, false, pReader->idStr, false);
   if (code != TSDB_CODE_SUCCESS) {
     return false;
   }
@@ -3927,7 +3927,8 @@ int32_t tsdbSetTableList(STsdbReader* pReader, const void* pTableList, int32_t n
     if (code) {
       return code;
     }
-    pReader->status.uidList.tableUidList = (uint64_t*)taosMemoryRealloc(pReader->status.uidList.tableUidList, sizeof(uint64_t) * num);
+    pReader->status.uidList.tableUidList =
+        (uint64_t*)taosMemoryRealloc(pReader->status.uidList.tableUidList, sizeof(uint64_t) * num);
   }
 
   taosHashClear(pReader->status.pTableMap);

source/dnode/vnode/src/vnd/vnodeQuery.c

@@ -382,6 +382,7 @@ int32_t vnodeGetLoad(SVnode *pVnode, SVnodeLoad *pLoad) {
   pLoad->syncRestore = state.restored;
   pLoad->syncCanRead = state.canRead;
   pLoad->cacheUsage = tsdbCacheGetUsage(pVnode);
+  pLoad->numOfCacheTables = tsdbCacheGetElems(pVnode);
   pLoad->numOfTables = metaGetTbNum(pVnode->pMeta);
   pLoad->numOfTimeSeries = metaGetTimeSeriesNum(pVnode->pMeta);
   pLoad->totalStorage = (int64_t)3 * 1073741824;

source/util/src/tlrucache.c

@@ -580,6 +580,16 @@ static size_t taosLRUCacheShardGetUsage(SLRUCacheShard *shard) {
   return usage;
 }
 
+static int32_t taosLRUCacheShardGetElems(SLRUCacheShard *shard) {
+  int32_t elems = 0;
+
+  taosThreadMutexLock(&shard->mutex);
+  elems = shard->table.elems;
+  taosThreadMutexUnlock(&shard->mutex);
+
+  return elems;
+}
+
 static size_t taosLRUCacheShardGetPinnedUsage(SLRUCacheShard *shard) {
   size_t usage = 0;
 
@@ -755,6 +765,16 @@ size_t taosLRUCacheGetUsage(SLRUCache *cache) {
   return usage;
 }
 
+int32_t taosLRUCacheGetElems(SLRUCache *cache) {
+  int32_t elems = 0;
+
+  for (int i = 0; i < cache->numShards; ++i) {
+    elems += taosLRUCacheShardGetElems(&cache->shards[i]);
+  }
+
+  return elems;
+}
+
 size_t taosLRUCacheGetPinnedUsage(SLRUCache *cache) {
   size_t usage = 0;