HyukjinKwon commented on issue #23008: [SPARK-22674][PYTHON] Removed the namedtuple pickling patch URL: https://github.com/apache/spark/pull/23008#issuecomment-451111327 Correct but there are other delta, for instance, normal pickler uses C impl which is faster in general whereas cloudpickle looks possible to be slower. I was thinking just adding one flag because people are being worried about the behaviour change. If we explicitly be able to switch on and off the hack itself alone, I think I can leave sign-off since we can preserve the previous behaviour 100% as is by the switch.
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