diff --git a/source/common/src/tglobal.c b/source/common/src/tglobal.c
index 996cc3c6f8..3372c7b1cc 100644
--- a/source/common/src/tglobal.c
+++ b/source/common/src/tglobal.c
@@ -669,12 +669,12 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddInt32(pCfg, "retentionSpeedLimitMB", tsRetentionSpeedLimitMB, 0, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
 
   if (cfgAddInt32(pCfg, "numOfMnodeReadThreads", tsNumOfMnodeReadThreads, 1, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
-  if (cfgAddInt32(pCfg, "numOfVnodeQueryThreads", tsNumOfVnodeQueryThreads, 2, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
+  if (cfgAddInt32(pCfg, "numOfVnodeQueryThreads", tsNumOfVnodeQueryThreads, 1, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
   if (cfgAddFloat(pCfg, "ratioOfVnodeStreamThreads", tsRatioOfVnodeStreamThreads, 0.01, 4, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
   if (cfgAddInt32(pCfg, "numOfVnodeFetchThreads", tsNumOfVnodeFetchThreads, 4, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
 
   if (cfgAddInt32(pCfg, "numOfVnodeRsmaThreads", tsNumOfVnodeRsmaThreads, 1, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
-  if (cfgAddInt32(pCfg, "numOfQnodeQueryThreads", tsNumOfQnodeQueryThreads, 4, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
+  if (cfgAddInt32(pCfg, "numOfQnodeQueryThreads", tsNumOfQnodeQueryThreads, 1, 1024, CFG_SCOPE_SERVER, CFG_DYN_NONE) != 0) return -1;
 
   //  tsNumOfQnodeFetchThreads = tsNumOfCores / 2;
   //  tsNumOfQnodeFetchThreads = TMAX(tsNumOfQnodeFetchThreads, 4);
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index ee4b0bbae9..77a80d229e 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -794,7 +794,6 @@ void qStopTaskOperators(SExecTaskInfo* pTaskInfo) {
     SExchangeOpStopInfo* pStop = taosArrayGet(pTaskInfo->stopInfo.pStopInfo, i);
     SExchangeInfo*       pExchangeInfo = taosAcquireRef(exchangeObjRefPool, pStop->refId);
     if (pExchangeInfo) {
-      qDebug("%s stop exchange operator", GET_TASKID(pTaskInfo));
       tsem_post(&pExchangeInfo->ready);
       taosReleaseRef(exchangeObjRefPool, pStop->refId);
     }