edponce commented on a change in pull request #9712:
URL: https://github.com/apache/arrow/pull/9712#discussion_r594604228



##########
File path: dev/archery/archery/benchmark/runner.py
##########
@@ -120,11 +120,14 @@ def is_json_result(cls, path_or_str):
 
     @staticmethod
     def from_json(path_or_str, **kwargs):
-        # breaks recursive imports
-        from ..utils.codec import BenchmarkRunnerCodec
-        path_or_str, json_load = (open(path_or_str), json.load) \
-            if os.path.isfile(path_or_str) else (path_or_str, json.loads)
-        return BenchmarkRunnerCodec.decode(json_load(path_or_str), **kwargs)
+        # .codec imported here to break recursive imports
+        from .codec import BenchmarkRunnerCodec

Review comment:
       I do not understand the "break recursive imports" comment. I do not see 
how this import breaks the method from being called unless it has side-effects 
which I am not aware of.




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