HyukjinKwon commented on issue #23470: [SPARK-26549][PySpark] Fix for python worker reuse take no effect for Python3 URL: https://github.com/apache/spark/pull/23470#issuecomment-451712610 > It happened because, during the python worker check end of the stream in Python3, we got an unexpected value -1 here which refers to END_OF_DATA_SECTION. I haven't taken a look yet but where's difference between Python 2 and 3? Can you also explain why?
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