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Posted to issues@spark.apache.org by "Gengliang Wang (JIRA)" <ji...@apache.org> on 2019/07/24 08:07:00 UTC

[jira] [Created] (SPARK-28497) Disallow upcasting complex data types to string type

Gengliang Wang created SPARK-28497:
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             Summary: Disallow upcasting complex data types to string type
                 Key: SPARK-28497
                 URL: https://issues.apache.org/jira/browse/SPARK-28497
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Gengliang Wang


In the current implementation. complex types like Array/Map/StructType are allowed to upcast as StringType.
This is not safe casting. We should disallow it.



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