Github user e-dorigatti commented on a diff in the pull request: https://github.com/apache/spark/pull/21467#discussion_r194041622 --- Diff: python/pyspark/worker.py --- @@ -140,15 +139,18 @@ def read_single_udf(pickleSer, infile, eval_type): else: row_func = chain(row_func, f) + func = fail_on_stopiteration(row_func) --- End diff -- Clearer?
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