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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2021/03/01 19:55:22 UTC

[GitHub] [spark] cloud-fan edited a comment on pull request #31682: [WIP][SPARK-34545][SQL] Fix issues with valueCompare feature of pyrolite

cloud-fan edited a comment on pull request #31682:
URL: https://github.com/apache/spark/pull/31682#issuecomment-788226385


   My idea is to let one `Pickler` instance only handle data of the same schema.
   
   IIUC the Python UDF operator needs to send the input (values of (c1, c2)) from JVM to Python, run the UDF, and send back the UDF result (values of (c3, c4)) from Python to JVM. Since the `Pickler` instance is used to serialize both the input and output data, the bug happens. Do I understand it correctly?


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