cloud-fan commented on issue #24958: [SPARK-28153][PYTHON] Use AtomicReference at InputFileBlockHolder (to support input_file_name with Python UDF) URL: https://github.com/apache/spark/pull/24958#issuecomment-508766841 While I'm reading the discussion here, I can hardly understand how we implement `input_file()` function with `InheritableThreadLocal` and `AtomicReference`, and make it work for pyspark. On the other hand, the idea proposed by @brkyvz is really easy to understand.
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