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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2021/08/06 07:56:24 UTC

[GitHub] [spark] JacekPliszka commented on pull request #29719: [SPARK-32846][SQL][PYTHON] Support createDataFrame from an RDD of pd.DataFrames

JacekPliszka commented on pull request #29719:
URL: https://github.com/apache/spark/pull/29719#issuecomment-894077482


   The exact reason I need this API is because Spark DataFrame optimization does not work for complex transformations I have. 
   
   Simple switch to my own custom wrapper on RDDs (lame analogue of this wrapper) gave me 4-20 times better performance and much lower cost of pandas to pyspark migration.


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