HyukjinKwon opened a new pull request #23904: [SPARK-27000][PYTHON] Upgrades cloudpickle to v0.8.0 URL: https://github.com/apache/spark/pull/23904 ## What changes were proposed in this pull request? After upgrading cloudpickle to 0.6.1 at https://github.com/apache/spark/pull/20691, one regression was found. Cloudpickle had a critical https://github.com/cloudpipe/cloudpickle/pull/240 for that. Basically, it currently looks existing globals would override globals shipped in a function's, meaning: **Before:** ```python >>> def hey(): ... return "Hi" ... >>> spark.range(1).rdd.map(lambda _: hey()).collect() ['Hi'] >>> def hey(): ... return "Yeah" ... >>> spark.range(1).rdd.map(lambda _: hey()).collect() ['Hi'] ``` **After:** ```python >>> def hey(): ... return "Hi" ... >>> spark.range(1).rdd.map(lambda _: hey()).collect() ['Hi'] >>> >>> def hey(): ... return "Yeah" ... >>> spark.range(1).rdd.map(lambda _: hey()).collect() ['Yeah'] ``` ## How was this patch tested? Manually tested, tests were added. Verified unit tests were added in cloudpickle.
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