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Posted to reviews@spark.apache.org by "panbingkun (via GitHub)" <gi...@apache.org> on 2023/03/08 08:28:14 UTC

[GitHub] [spark] panbingkun commented on pull request #40316: [SPARK-42679][CONNECT][PYTHON] createDataFrame doesn't work with non-nullable schema

panbingkun commented on PR #40316:
URL: https://github.com/apache/spark/pull/40316#issuecomment-1459721237

   Root causeļ¼š
   The data type nullable inferred from the data is true by default
   However, on the connector server side, `to(schema: StructType)` is called, and then `Project.matchSchema (logicalPlan, schema, sparkSession. sessionState. conf)` is executed


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