1 files changed, 6 insertions, 0 deletions
diff --git a/src/mongo/db/s/migration_chunk_cloner_source_legacy.h b/src/mongo/db/s/migration_chunk_cloner_source_legacy.h
index f41127afad1..7bc9b80df0b 100644
--- a/src/mongo/db/s/migration_chunk_cloner_source_legacy.h
+++ b/src/mongo/db/s/migration_chunk_cloner_source_legacy.h
@@ -373,10 +373,16 @@ private:
     // List of _id of documents that were modified that must be re-cloned (xfer mods)
     std::list<BSONObj> _reload;
 
+    // Amount of upsert xfer mods that have not yet reached the recipient.
+    size_t _untransferredUpsertsCounter{0};
+
     // List of _id of documents that were deleted during clone that should be deleted later (xfer
     // mods)
     std::list<BSONObj> _deleted;
 
+    // Amount of delete xfer mods that have not yet reached the recipient.
+    size_t _untransferredDeletesCounter{0};
+
     // Total bytes in _reload + _deleted (xfer mods)
     uint64_t _memoryUsed{0};