diff --git a/source/libs/stream/src/stream.c b/source/libs/stream/src/stream.c
index 4a63cd3bb28cdbb31ad4f2ca7531787fccb7e7d4..ee317d0751c90f4f63669a228ce35f640b5bde1b 100644
--- a/source/libs/stream/src/stream.c
+++ b/source/libs/stream/src/stream.c
@@ -67,7 +67,11 @@ void streamSchedByTimer(void* param, void* tmrId) {
 
     atomic_store_8(&pTask->triggerStatus, TASK_TRIGGER_STATUS__INACTIVE);
 
-    streamTaskInput(pTask, (SStreamQueueItem*)trigger);
+    if (streamTaskInput(pTask, (SStreamQueueItem*)trigger) < 0) {
+      taosFreeQitem(trigger);
+      taosTmrReset(streamSchedByTimer, (int32_t)pTask->triggerParam, pTask, streamEnv.timer, &pTask->timer);
+      return;
+    }
     streamSchedExec(pTask);
   }
 
diff --git a/source/libs/stream/src/streamMeta.c b/source/libs/stream/src/streamMeta.c
index 63a28e17ed7461d8b0eb95c8eece7f31f0f43710..53e49a6ba5e0be669329c5ff6414c3648ee14fb3 100644
--- a/source/libs/stream/src/streamMeta.c
+++ b/source/libs/stream/src/streamMeta.c
@@ -28,6 +28,7 @@ SStreamMeta* streamMetaOpen(const char* path, void* ahandle, FTaskExpand expandF
   sprintf(streamPath, "%s/%s", path, "stream");
   pMeta->path = strdup(streamPath);
   if (tdbOpen(pMeta->path, 16 * 1024, 1, &pMeta->db) < 0) {
+    taosMemoryFree(streamPath);
     goto _err;
   }
 
@@ -58,7 +59,7 @@ SStreamMeta* streamMetaOpen(const char* path, void* ahandle, FTaskExpand expandF
   return pMeta;
 
 _err:
-  if (pMeta->path) taosMemoryFree(pMeta->path);
+  taosMemoryFree(pMeta->path);
   if (pMeta->pTasks) taosHashCleanup(pMeta->pTasks);
   if (pMeta->pTaskDb) tdbTbClose(pMeta->pTaskDb);
   if (pMeta->pCheckpointDb) tdbTbClose(pMeta->pCheckpointDb);
@@ -250,6 +251,8 @@ int32_t streamLoadTasks(SStreamMeta* pMeta) {
   while (tdbTbcNext(pCur, &pKey, &kLen, &pVal, &vLen) == 0) {
     SStreamTask* pTask = taosMemoryCalloc(1, sizeof(SStreamTask));
     if (pTask == NULL) {
+      tdbFree(pKey);
+      tdbFree(pVal);
       return -1;
     }
     tDecoderInit(&decoder, (uint8_t*)pVal, vLen);
@@ -257,10 +260,14 @@ int32_t streamLoadTasks(SStreamMeta* pMeta) {
     tDecoderClear(&decoder);
 
     if (pMeta->expandFunc(pMeta->ahandle, pTask) < 0) {
+      tdbFree(pKey);
+      tdbFree(pVal);
       return -1;
     }
 
     if (taosHashPut(pMeta->pTasks, &pTask->taskId, sizeof(int32_t), &pTask, sizeof(void*)) < 0) {
+      tdbFree(pKey);
+      tdbFree(pVal);
       return -1;
     }
   }
diff --git a/source/libs/stream/src/streamState.c b/source/libs/stream/src/streamState.c
index ea590c57e66f615872eecee0f66dce581dca52f5..c0ed135d74343395be1147fa72d012e032cd1f2b 100644
--- a/source/libs/stream/src/streamState.c
+++ b/source/libs/stream/src/streamState.c
@@ -63,7 +63,7 @@ SStreamState* streamStateOpen(char* path, SStreamTask* pTask, bool specPath, int
     sprintf(statePath, "%s/%d", path, pTask->taskId);
   } else {
     memset(statePath, 0, 300);
-    strncpy(statePath, path, 300);
+    tstrncpy(statePath, path, 300);
   }
   if (tdbOpen(statePath, szPage, pages, &pState->db) < 0) {
     goto _err;