refactor: refactor to avoid spin operator in exchange operator.

source/libs/executor/src/executorimpl.c

@@ -1854,6 +1854,8 @@ static void concurrentlyLoadRemoteDataImpl(SOperatorInfo* pOperator, SExchangeIn
   size_t  totalSources = taosArrayGetSize(pExchangeInfo->pSources);
 
   while (1) {
+    tsem_wait(&pExchangeInfo->ready);
+
     int32_t completed = 0;
     for (int32_t i = 0; i < totalSources; ++i) {
       SSourceDataInfo* pDataInfo = taosArrayGet(pExchangeInfo->pSourceDataInfo, i);
@@ -1874,6 +1876,7 @@ static void concurrentlyLoadRemoteDataImpl(SOperatorInfo* pOperator, SExchangeIn
       SRetrieveTableRsp*     pRsp = pDataInfo->pRsp;
       SDownstreamSourceNode* pSource = taosArrayGet(pExchangeInfo->pSources, i);
 
+      // todo
       SLoadRemoteDataInfo* pLoadInfo = &pExchangeInfo->loadInfo;
       if (pRsp->numOfRows == 0) {
         qDebug("%s vgId:%d, taskId:0x%" PRIx64 " execId:%d index:%d completed, rowsOfSource:%" PRIu64
@@ -1883,7 +1886,8 @@ static void concurrentlyLoadRemoteDataImpl(SOperatorInfo* pOperator, SExchangeIn
         pDataInfo->status = EX_SOURCE_DATA_EXHAUSTED;
         completed += 1;
         taosMemoryFreeClear(pDataInfo->pRsp);
-        continue;
+        break;
+//        continue;
       }
 
       SRetrieveTableRsp* pRetrieveRsp = pDataInfo->pRsp;
@@ -1904,10 +1908,8 @@ static void concurrentlyLoadRemoteDataImpl(SOperatorInfo* pOperator, SExchangeIn
 
       if (pRsp->completed == 1) {
         qDebug("%s fetch msg rsp from vgId:%d, taskId:0x%" PRIx64
-                   " execId:%d"
-                   " index:%d completed, blocks:%d, numOfRows:%d, rowsOfSource:%" PRIu64 ", totalRows:%" PRIu64
-                   ", total:%.2f Kb,"
-                   " completed:%d try next %d/%" PRIzu,
+               " execId:%d index:%d completed, blocks:%d, numOfRows:%d, rowsOfSource:%" PRIu64 ", totalRows:%" PRIu64
+               ", total:%.2f Kb, completed:%d try next %d/%" PRIzu,
                GET_TASKID(pTaskInfo), pSource->addr.nodeId, pSource->taskId, pSource->execId, i, pRsp->numOfBlocks,
                pRsp->numOfRows, pDataInfo->totalRows, pLoadInfo->totalRows, pLoadInfo->totalSize / 1024.0,
                completed + 1, i + 1, totalSources);
@@ -1939,7 +1941,7 @@ static void concurrentlyLoadRemoteDataImpl(SOperatorInfo* pOperator, SExchangeIn
       return;
     }
 
-    sched_yield();
+//    sched_yield();
   }
 
   _error:
@@ -1970,6 +1972,7 @@ static int32_t prepareConcurrentlyLoad(SOperatorInfo* pOperator) {
   pOperator->cost.openCost = taosGetTimestampUs() - startTs;
 
   tsem_wait(&pExchangeInfo->ready);
+  tsem_post(&pExchangeInfo->ready);
   return TSDB_CODE_SUCCESS;
 }
 

source/libs/executor/src/scanoperator.c

@@ -956,8 +956,12 @@ SOperatorInfo* createTableScanOperatorInfo(STableScanPhysiNode* pTableScanNode,
   pOperator->pTaskInfo = pTaskInfo;
 
   pInfo->metaCache.pTableMetaEntryCache = taosLRUCacheInit(1024*128, -1, .5);
-  taosLRUCacheSetStrictCapacity(pInfo->metaCache.pTableMetaEntryCache, false);
+  if (pInfo->metaCache.pTableMetaEntryCache == NULL) {
+    code = terrno;
+    goto _error;
+  }
 
+  taosLRUCacheSetStrictCapacity(pInfo->metaCache.pTableMetaEntryCache, false);
   pOperator->fpSet = createOperatorFpSet(operatorDummyOpenFn, doTableScan, NULL, NULL, destroyTableScanOperatorInfo,
                                          getTableScannerExecInfo);
 

source/util/src/tlrucache.c

@@ -630,13 +630,16 @@ static int getDefaultCacheShardBits(size_t capacity) {
 
 SLRUCache *taosLRUCacheInit(size_t capacity, int numShardBits, double highPriPoolRatio) {
   if (numShardBits >= 20) {
+    terrno = TSDB_CODE_INVALID_PARA;
     return NULL;
   }
   if (highPriPoolRatio < 0.0 || highPriPoolRatio > 1.0) {
+    terrno = TSDB_CODE_INVALID_PARA;
     return NULL;
   }
   SLRUCache *cache = taosMemoryCalloc(1, sizeof(SLRUCache));
   if (!cache) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return NULL;
   }
 
@@ -648,7 +651,7 @@ SLRUCache *taosLRUCacheInit(size_t capacity, int numShardBits, double highPriPoo
   cache->shards = taosMemoryCalloc(numShards, sizeof(SLRUCacheShard));
   if (!cache->shards) {
     taosMemoryFree(cache);
-
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return NULL;
   }