diff --git a/src/tsdb/src/tsdbBuffer.c b/src/tsdb/src/tsdbBuffer.c
index 16f06c82bb..2084203814 100644
--- a/src/tsdb/src/tsdbBuffer.c
+++ b/src/tsdb/src/tsdbBuffer.c
@@ -120,7 +120,9 @@ SListNode *tsdbAllocBufBlockFromPool(STsdbRepo *pRepo) {
   STsdbBufPool *pBufPool = pRepo->pPool;
 
   while (POOL_IS_EMPTY(pBufPool)) {
+    pRepo->repoLocked = false;
     pthread_cond_wait(&(pBufPool->poolNotEmpty), &(pRepo->mutex));
+    pRepo->repoLocked = true;
   }
 
   SListNode *    pNode = tdListPopHead(pBufPool->bufBlockList);