Serialize at least one line when uploading using import-data KIKIMR-19108

1 files changed, 2 insertions, 2 deletions

diff --git a/ydb/public/lib/ydb_cli/dump/restore_import_data.cpp b/ydb/public/lib/ydb_cli/dump/restore_import_data.cpp
index b6a9f412af1..724d54a0262 100644
--- a/ydb/public/lib/ydb_cli/dump/restore_import_data.cpp
+++ b/ydb/public/lib/ydb_cli/dump/restore_import_data.cpp
@@ -456,7 +456,7 @@ public:
         }
 
         auto handle = Pop();
-        while (result.size() + handle.mapped().size() < maxSize) {
+        do {
             result << handle.mapped() << "\n";
 
             if (Empty()) {
@@ -464,7 +464,7 @@ public:
             }
 
             handle = Pop();
-        }
+        } while (result.size() + handle.mapped().size() < maxSize);
 
         Add(std::move(handle.key()), std::move(handle.mapped()));
         return result;