diff --git a/source/dnode/mnode/impl/src/mndStream.c b/source/dnode/mnode/impl/src/mndStream.c
index 1fb398d070..511cc8f984 100644
--- a/source/dnode/mnode/impl/src/mndStream.c
+++ b/source/dnode/mnode/impl/src/mndStream.c
@@ -2195,8 +2195,9 @@ static int32_t refreshNodeListFromExistedStreams(SMnode *pMnode, SArray *pNodeLi
 
       SNodeEntry entry = {.hbTimestamp = -1, .nodeId = pTask->info.nodeId, .lastHbMsgId = -1};
       epsetAssign(&entry.epset, &pTask->info.epSet);
-      if (taosHashPut(pHash, &entry.nodeId, sizeof(entry.nodeId), &entry, sizeof(entry)) != 0) {
-        mError("failed to put entry into hash map, nodeId:%d", entry.nodeId);
+      int32_t ret = taosHashPut(pHash, &entry.nodeId, sizeof(entry.nodeId), &entry, sizeof(entry));
+      if (ret != 0 && ret != TSDB_CODE_DUP_KEY) {
+        mError("failed to put entry into hash map, nodeId:%d, code:%s", entry.nodeId, tstrerror(code));
       }
     }
 
diff --git a/source/libs/stream/inc/streamBackendRocksdb.h b/source/libs/stream/inc/streamBackendRocksdb.h
index 3a5d72576b..567d9de949 100644
--- a/source/libs/stream/inc/streamBackendRocksdb.h
+++ b/source/libs/stream/inc/streamBackendRocksdb.h
@@ -135,7 +135,7 @@ typedef struct {
 #define META_ON_S3_FORMATE "%s_%" PRId64 "\n%s_%" PRId64 "\n%s_%" PRId64 ""
 
 bool       streamBackendDataIsExist(const char* path, int64_t chkpId);
-void*      streamBackendInit(const char* path, int64_t chkpId, int32_t vgId);
+int32_t    streamBackendInit(const char* path, int64_t chkpId, int32_t vgId, SBackendWrapper** pBackend);
 void       streamBackendCleanup(void* arg);
 void       streamBackendHandleCleanup(void* arg);
 int32_t    streamBackendLoadCheckpointInfo(void* pMeta);
diff --git a/source/libs/stream/src/streamBackendRocksdb.c b/source/libs/stream/src/streamBackendRocksdb.c
index d9b6671d9b..57f75743ac 100644
--- a/source/libs/stream/src/streamBackendRocksdb.c
+++ b/source/libs/stream/src/streamBackendRocksdb.c
@@ -812,29 +812,32 @@ bool streamBackendDataIsExist(const char* path, int64_t chkpId) {
   return exist;
 }
 
-void* streamBackendInit(const char* streamPath, int64_t chkpId, int32_t vgId) {
+int32_t streamBackendInit(const char* streamPath, int64_t chkpId, int32_t vgId, SBackendWrapper** pBackend) {
   char*   backendPath = NULL;
-  int32_t code = rebuildDirFromCheckpoint(streamPath, chkpId, &backendPath);
+  int32_t code = 0;
+  int32_t lino = 0;
+  char*   err = NULL;
+  size_t  nCf = 0;
+
+  *pBackend = NULL;
+
+  code = rebuildDirFromCheckpoint(streamPath, chkpId, &backendPath);
+  TSDB_CHECK_CODE(code, lino, _EXIT);
 
   stDebug("start to init stream backend:%s, checkpointId:%" PRId64 " vgId:%d", backendPath, chkpId, vgId);
 
   uint32_t         dbMemLimit = nextPow2(tsMaxStreamBackendCache) << 20;
   SBackendWrapper* pHandle = taosMemoryCalloc(1, sizeof(SBackendWrapper));
-  if (pHandle == NULL) {
-    goto _EXIT;
-  }
+  TSDB_CHECK_NULL(pHandle, code, lino, _EXIT, terrno);
 
   pHandle->list = tdListNew(sizeof(SCfComparator));
-  if (pHandle->list == NULL) {
-    goto _EXIT;
-  }
+  TSDB_CHECK_NULL(pHandle->list, code, lino, _EXIT, terrno);
 
   (void)taosThreadMutexInit(&pHandle->mutex, NULL);
   (void)taosThreadMutexInit(&pHandle->cfMutex, NULL);
+
   pHandle->cfInst = taosHashInit(64, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
-  if (pHandle->cfInst == NULL) {
-    goto _EXIT;
-  }
+  TSDB_CHECK_NULL(pHandle->cfInst, code, lino, _EXIT, terrno);
 
   rocksdb_env_t* env = rocksdb_create_default_env();  // rocksdb_envoptions_create();
 
@@ -863,9 +866,6 @@ void* streamBackendInit(const char* streamPath, int64_t chkpId, int32_t vgId) {
       NULL, destroyCompactFilteFactory, compactFilteFactoryCreateFilter, compactFilteFactoryName);
   rocksdb_options_set_compaction_filter_factory(pHandle->dbOpt, pHandle->filterFactory);
 
-  char*  err = NULL;
-  size_t nCf = 0;
-
   char** cfs = rocksdb_list_column_families(opts, backendPath, &nCf, &err);
   if (nCf == 0 || nCf == 1 || err != NULL) {
     taosMemoryFreeClear(err);
@@ -894,7 +894,9 @@ void* streamBackendInit(const char* streamPath, int64_t chkpId, int32_t vgId) {
   stDebug("init stream backend at %s, backend:%p, vgId:%d", backendPath, pHandle, vgId);
   taosMemoryFreeClear(backendPath);
 
-  return (void*)pHandle;
+  *pBackend = pHandle;
+  return code;
+
 _EXIT:
   rocksdb_options_destroy(opts);
   rocksdb_cache_destroy(cache);
@@ -904,9 +906,9 @@ _EXIT:
   taosHashCleanup(pHandle->cfInst);
   pHandle->list = tdListFree(pHandle->list);
   taosMemoryFree(pHandle);
-  stDebug("failed to init stream backend at %s", backendPath);
+  stDebug("failed to init stream backend at %s, vgId:%d line:%d code:%s", backendPath, vgId, lino, tstrerror(code));
   taosMemoryFree(backendPath);
-  return NULL;
+  return code;
 }
 void streamBackendCleanup(void* arg) {
   SBackendWrapper* pHandle = (SBackendWrapper*)arg;
diff --git a/source/libs/stream/src/streamMeta.c b/source/libs/stream/src/streamMeta.c
index f4202667ff..699ad9d372 100644
--- a/source/libs/stream/src/streamMeta.c
+++ b/source/libs/stream/src/streamMeta.c
@@ -231,8 +231,10 @@ int32_t streamMetaCheckBackendCompatible(SStreamMeta* pMeta) {
 }
 
 int32_t streamMetaCvtDbFormat(SStreamMeta* pMeta) {
-  int32_t code = 0;
-  int64_t chkpId = streamMetaGetLatestCheckpointId(pMeta);
+  int32_t          code = 0;
+  SBackendWrapper* pBackend = NULL;
+  int64_t          chkpId = streamMetaGetLatestCheckpointId(pMeta);
+
   terrno = 0;
   bool exist = streamBackendDataIsExist(pMeta->path, chkpId);
   if (exist == false) {
@@ -240,7 +242,10 @@ int32_t streamMetaCvtDbFormat(SStreamMeta* pMeta) {
     return code;
   }
 
-  SBackendWrapper* pBackend = streamBackendInit(pMeta->path, chkpId, pMeta->vgId);
+  code = streamBackendInit(pMeta->path, chkpId, pMeta->vgId, &pBackend);
+  if (code) {
+    return code;
+  }
 
   void* pIter = taosHashIterate(pBackend->cfInst, NULL);
   while (pIter) {
@@ -259,9 +264,13 @@ _EXIT:
 
   if (code == 0) {
     char* state = taosMemoryCalloc(1, strlen(pMeta->path) + 32);
-    sprintf(state, "%s%s%s", pMeta->path, TD_DIRSEP, "state");
-    taosRemoveDir(state);
-    taosMemoryFree(state);
+    if (state != NULL) {
+      sprintf(state, "%s%s%s", pMeta->path, TD_DIRSEP, "state");
+      taosRemoveDir(state);
+      taosMemoryFree(state);
+    } else {
+      stError("vgId:%s, failed to remove file dir:%s, since:%s", pMeta->vgId, pMeta->path, tstrerror(code));
+    }
   }
 
   return code;
@@ -451,6 +460,8 @@ int32_t streamMetaOpen(const char* path, void* ahandle, FTaskBuild buildTaskFn,
   TSDB_CHECK_CODE(code, lino, _err);
 
   int64_t* pRid = taosMemoryMalloc(sizeof(int64_t));
+  TSDB_CHECK_NULL(pRid, code, lino, _err, terrno);
+
   memcpy(pRid, &pMeta->rid, sizeof(pMeta->rid));
   code = metaRefMgtAdd(pMeta->vgId, pRid);
   TSDB_CHECK_CODE(code, lino, _err);
diff --git a/source/libs/stream/src/streamSnapshot.c b/source/libs/stream/src/streamSnapshot.c
index 511445858a..2742798a04 100644
--- a/source/libs/stream/src/streamSnapshot.c
+++ b/source/libs/stream/src/streamSnapshot.c
@@ -130,6 +130,11 @@ int32_t streamGetFileSize(char* path, char* name, int64_t* sz) {
   int32_t ret = 0;
 
   char* fullname = taosMemoryCalloc(1, strlen(path) + 32);
+  if (fullname == NULL) {
+    stError("failed to get file:%s size, code: out of memory", name);
+    return terrno;
+  }
+
   sprintf(fullname, "%s%s%s", path, TD_DIRSEP, name);
 
   ret = taosStatFile(fullname, sz, NULL, NULL);
@@ -555,6 +560,11 @@ _NEXT:
           (int32_t)taosArrayGetSize(pHandle->pDbSnapSet), pHandle->currIdx);
 
   uint8_t* buf = taosMemoryCalloc(1, sizeof(SStreamSnapBlockHdr) + kBlockSize);
+  if (buf == NULL) {
+    stError("%s failed to prepare the block header, code:Out of memory", item->name);
+    return terrno;
+  }
+
   int64_t  nread = taosPReadFile(pSnapFile->fd, buf + sizeof(SStreamSnapBlockHdr), kBlockSize, pSnapFile->offset);
   if (nread < 0) {
     taosMemoryFree(buf);
@@ -764,6 +774,11 @@ int32_t streamSnapWrite(SStreamSnapWriter* pWriter, uint8_t* pData, uint32_t nDa
     sprintf(idstr, "0x%" PRIx64 "-0x%x", snapInfo.streamId, (int32_t)(snapInfo.taskId));
 
     char* path = taosMemoryCalloc(1, strlen(pHandle->metaPath) + 256);
+    if (path == NULL) {
+      stError("s-task:0x%x failed to prepare meta header buffer, code:Out of memory", (int32_t) snapInfo.taskId);
+      return terrno;
+    }
+
     sprintf(path, "%s%s%s%s%s%s%s%" PRId64 "", pHandle->metaPath, TD_DIRSEP, idstr, TD_DIRSEP, "checkpoints", TD_DIRSEP,
             "checkpoint", snapInfo.chkpId);
     if (!taosIsDir(path)) {
@@ -778,11 +793,19 @@ int32_t streamSnapWrite(SStreamSnapWriter* pWriter, uint8_t* pData, uint32_t nDa
     pDbSnapFile->path = path;
     pDbSnapFile->snapInfo = snapInfo;
     pDbSnapFile->pFileList = taosArrayInit(64, sizeof(SBackendFileItem));
+    if (pDbSnapFile->pFileList == NULL) {
+      return terrno;
+    }
+
     pDbSnapFile->currFileIdx = 0;
     pDbSnapFile->offset = 0;
 
     SBackendFileItem item = {0};
     item.name = taosStrdup((char*)ROCKSDB_CURRENT);
+    if (item.name == NULL) {
+      return terrno;
+    }
+
     item.type = ROCKSDB_CURRENT_TYPE;
 
     void* p = taosArrayPush(pDbSnapFile->pFileList, &item);
diff --git a/source/libs/stream/src/streamTask.c b/source/libs/stream/src/streamTask.c
index 365710f8a7..3319c7c74f 100644
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@@ -133,6 +133,11 @@ int32_t tNewStreamTask(int64_t streamId, int8_t taskLevel, SEpSet* pEpset, bool
   sprintf(buf, "0x%" PRIx64 "-0x%x", pTask->id.streamId, pTask->id.taskId);
 
   pTask->id.idStr = taosStrdup(buf);
+  if (pTask->id.idStr == NULL) {
+    stError("s-task:0x%x failed to build task id, code: out of memory", pTask->id.taskId);
+    return terrno;
+  }
+
   pTask->status.schedStatus = TASK_SCHED_STATUS__INACTIVE;
   pTask->status.taskStatus = fillHistory ? TASK_STATUS__SCAN_HISTORY : TASK_STATUS__READY;
   pTask->inputq.status = TASK_INPUT_STATUS__NORMAL;