fix bug

src/client/inc/tsclient.h

@@ -317,7 +317,7 @@ typedef struct STscObj {
 } STscObj;
 
 typedef struct SSubqueryState {
-  int32_t  subLock;
+  pthread_mutex_t mutex;
   int8_t  *states;
   int32_t  numOfSub;            // the number of total sub-queries
   uint64_t numOfRetrievedRows;  // total number of points in this query

src/client/src/tscSubquery.c

@@ -55,34 +55,17 @@ static void skipRemainValue(STSBuf* pTSBuf, tVariant* tag1) {
   }
 }
 
-
-void tscSpinLock(int32_t *lock) {
-  int     i = 0;
-  while (atomic_val_compare_exchange_32(lock, 0, 1) != 0) {
-    if (++i % 100 == 0) {
-      sched_yield();
-    }
-  }
-}
-
-void tscSpinUnlock(int32_t *lock) {
-  if (atomic_val_compare_exchange_32(lock, 1, 0) != 1) {
-    assert(false);
-  }
-}
-
-
 static void subquerySetState(SSqlObj *pSql, SSubqueryState *subState, int idx, int8_t state) {
   assert(idx < subState->numOfSub);
   assert(subState->states);
 
-  tscSpinLock(&subState->subLock);
+  pthread_mutex_lock(&subState->mutex);
   
   tscDebug("subquery:%p,%d state set to %d", pSql, idx, state);
   
   subState->states[idx] = state;
 
-  tscSpinUnlock(&subState->subLock);
+  pthread_mutex_unlock(&subState->mutex);
 }
 
 static bool allSubqueryDone(SSubqueryState *subState) {
@@ -106,7 +89,7 @@ static bool allSubqueryDone(SSubqueryState *subState) {
 static bool subAndCheckDone(SSqlObj *pSql, SSubqueryState *subState, int idx) {
   assert(idx < subState->numOfSub);
 
-  tscSpinLock(&subState->subLock);
+  pthread_mutex_lock(&subState->mutex);
 
   tscDebug("subquery:%p,%d state set to 1", pSql, idx);
   
@@ -114,7 +97,7 @@ static bool subAndCheckDone(SSqlObj *pSql, SSubqueryState *subState, int idx) {
 
   bool done = allSubqueryDone(subState);
 
-  tscSpinUnlock(&subState->subLock);
+  pthread_mutex_unlock(&subState->mutex);
 
   return done;
 }
@@ -432,6 +415,7 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
   
   // scan all subquery, if one sub query has only ts, ignore it
   tscDebug("%p start to launch secondary subqueries, %d out of %d needs to query", pSql, numOfSub, pSql->subState.numOfSub);
+  memset(&pSql->subState.states, 0, sizeof(*pSql->subState.states) * pSql->subState.numOfSub);
 
   bool success = true;
   
@@ -466,7 +450,6 @@ static int32_t tscLaunchRealSubqueries(SSqlObj* pSql) {
       break;
     }
     
-    subquerySetState(pNew, &pSql->subState, i, 0);
 
     tscClearSubqueryInfo(&pNew->cmd);
     pSql->pSubs[i] = pNew;
@@ -585,8 +568,13 @@ void freeJoinSubqueryObj(SSqlObj* pSql) {
     pSql->pSubs[i] = NULL;
   }
 
+  if (pSql->subState.states) {
+    pthread_mutex_destroy(&pSql->subState.mutex);
+  }
+  
   tfree(pSql->subState.states);
   
+  
   pSql->subState.numOfSub = 0;
 }
 
@@ -1269,6 +1257,19 @@ void tscFetchDatablockForSubquery(SSqlObj* pSql) {
       }
     }
 
+
+    if (orderedPrjQuery) {
+      for (int32_t i = 0; i < pSql->subState.numOfSub; ++i) {
+        SSqlObj* pSub = pSql->pSubs[i];
+        if (pSub != NULL && pSub->res.row >= pSub->res.numOfRows && pSub->res.completed) {
+          pSql->subState.states[i] = 0;
+        } else {
+          pSql->subState.states[i] = 1;
+        }
+      }
+    }
+    
+
     for (int32_t i = 0; i < pSql->subState.numOfSub; ++i) {
       SSqlObj* pSub = pSql->pSubs[i];
       if (pSub == NULL) {
@@ -1296,13 +1297,9 @@ void tscFetchDatablockForSubquery(SSqlObj* pSql) {
           pSub->cmd.command = TSDB_SQL_SELECT;
           pSub->fp = tscJoinQueryCallback;
 
-          subquerySetState(pSub, &pSql->subState, i, 0);
-          
           tscProcessSql(pSub);
           tryNextVnode = true;
         } else {
-          subquerySetState(pSub, &pSql->subState, i, 1);
-          
           tscDebug("%p no result in current subquery anymore", pSub);
         }
       }
@@ -1495,8 +1492,6 @@ void tscJoinQueryCallback(void* param, TAOS_RES* tres, int code) {
     pSql->fp = joinRetrieveFinalResCallback;  // continue retrieve data
     pSql->cmd.command = TSDB_SQL_FETCH;
     
-    subquerySetState(pSql, &pParentSql->subState, pSupporter->subqueryIndex, 0);
-    
     tscProcessSql(pSql);
   } else {  // first retrieve from vnode during the secondary stage sub-query
     // set the command flag must be after the semaphore been correctly set.
@@ -1670,6 +1665,8 @@ void tscHandleMasterJoinQuery(SSqlObj* pSql) {
       code = TSDB_CODE_TSC_OUT_OF_MEMORY;
       goto _error;
     }
+    
+    pthread_mutex_init(&pSql->subState.mutex, NULL);
   }
   
   bool hasEmptySub = false;
@@ -1707,8 +1704,9 @@ void tscHandleMasterJoinQuery(SSqlObj* pSql) {
     for (int32_t i = 0; i < pSql->subState.numOfSub; ++i) {
       SSqlObj* pSub = pSql->pSubs[i];
       if ((code = tscProcessSql(pSub)) != TSDB_CODE_SUCCESS) {
-        memset(pSql->subState.states + i, 1, sizeof(*pSql->subState.states) * (pSql->subState.numOfSub - i));  // the already sent request will continue and do not go to the error process routine
+        pRes->code = code;
-        break;
+        (*pSub->fp)(pSub->param, pSub, 0);
+        return;
       }
     }
 
@@ -1799,6 +1797,8 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
       tfree(pMemoryBuf);
       return ret;
     }
+
+    pthread_mutex_init(&pState->mutex, NULL);
   }
 
   memset(pState->states, 0, sizeof(*pState->states) * pState->numOfSub);
@@ -2454,6 +2454,8 @@ int32_t tscHandleMultivnodeInsert(SSqlObj *pSql) {
       pRes->code = TSDB_CODE_TSC_OUT_OF_MEMORY;
       goto _error;
     }
+
+    pthread_mutex_init(&pSql->subState.mutex, NULL);
   }
 
   memset(pSql->subState.states, 0, sizeof(*pSql->subState.states) * pSql->subState.numOfSub);

src/client/src/tscUtil.c

@@ -441,6 +441,10 @@ static void tscFreeSubobj(SSqlObj* pSql) {
     pSql->pSubs[i] = NULL;
   }
 
+  if (pSql->subState.states) {
+    pthread_mutex_destroy(&pSql->subState.mutex);
+  }
+
   tfree(pSql->subState.states);
 
   pSql->subState.numOfSub = 0;