fix bug

src/cq/src/cqMain.c

@@ -392,7 +392,7 @@ static void cqCreateStream(SCqContext *pContext, SCqObj *pObj) {
   pObj->tmrId = 0;
 
   if (pObj->pStream == NULL) {
-    pObj->pStream = taos_open_stream(pContext->dbConn, pObj->sqlStr, cqProcessStreamRes, 0, pObj, NULL);
+    pObj->pStream = taos_open_stream(pContext->dbConn, pObj->sqlStr, cqProcessStreamRes, 0, (void *)pObj->rid, NULL);
 
     // TODO the pObj->pStream may be released if error happens
     if (pObj->pStream) {
@@ -406,17 +406,27 @@ static void cqCreateStream(SCqContext *pContext, SCqObj *pObj) {
 }
 
 static void cqProcessStreamRes(void *param, TAOS_RES *tres, TAOS_ROW row) {
-  SCqObj *pObj = (SCqObj *)param;
+  SCqObj* pObj = (SCqObj*)taosAcquireRef(cqObjRef, (int64_t)param);
+  if (pObj == NULL) {
+    return;
+  }
+  
   if (tres == NULL && row == NULL) {
     taos_close_stream(pObj->pStream);
 
     pObj->pStream = NULL;
+
+    taosReleaseRef(cqObjRef, (int64_t)param);
+
     return;
   }
 
   SCqContext *pContext = pObj->pContext;
   STSchema   *pSchema = pObj->pSchema;
-  if (pObj->pStream == NULL) return;
+  if (pObj->pStream == NULL) {    
+    taosReleaseRef(cqObjRef, (int64_t)param);
+    return;
+  }
   
   cDebug("vgId:%d, id:%d CQ:%s stream result is ready", pContext->vgId, pObj->tid, pObj->sqlStr);
 
@@ -468,5 +478,7 @@ static void cqProcessStreamRes(void *param, TAOS_RES *tres, TAOS_ROW row) {
   // write into vnode write queue
   pContext->cqWrite(pContext->vgId, pHead, TAOS_QTYPE_CQ, NULL);
   free(buffer);
+  
+  taosReleaseRef(cqObjRef, (int64_t)param);
 }