assert

Author: jkartseva

src/Disks/ObjectStorages/AzureBlobStorage/AzureObjectStorage.cpp

@@ -71,6 +71,7 @@ class AzureIteratorAsync final : public IObjectStorageIteratorAsync
         if (client->IsClientForDisk())
             ProfileEvents::increment(ProfileEvents::DiskAzureListObjects);
 
+        chassert(batch.empty());
         auto blob_list_response = client->ListBlobs(options);
         auto blobs_list = blob_list_response.Blobs;
         batch.reserve(blobs_list.size());