diff --git a/python/langsmith/client.py b/python/langsmith/client.py
index d03153f84..e67c106ff 100644
--- a/python/langsmith/client.py
+++ b/python/langsmith/client.py
@@ -494,13 +494,10 @@ def __init__(
             if info is None or isinstance(info, ls_schemas.LangSmithInfo)
             else ls_schemas.LangSmithInfo(**info)
         )
-        self.compressed_multipart_buffer = ...
         weakref.finalize(self, close_session, self.session)
         atexit.register(close_session, session_)
         # Initialize auto batching
-        if auto_batch_tracing and _compression_enabled:
-            ...
-        elif auto_batch_tracing:
+        if auto_batch_tracing:
             self.tracing_queue: Optional[PriorityQueue] = PriorityQueue()
 
             threading.Thread(
@@ -1298,10 +1295,6 @@ def create_run(
                 self.tracing_queue.put(
                     TracingQueueItem(run_create["dotted_order"], serialized_op)
                 )
-            elif os.environ["COMP"]:
-                # Do something different
-                # Use existing serialized_run_dict
-
             else:
                 # Neither Rust nor Python batch ingestion is configured,
                 # fall back to the non-batch approach.