Github user gatorsmile commented on the issue:
    Regarding the error message, this is a good example to show how to provide 
a user-friendly message. To the external end users, they might not be aware of 
the internal implementation. They might not be aware of Apache ARROW is being 
used. They might not even know what is Apache Arrow. The conf might be set by 
the system admin or others. Thus, this error message is confusing to them. 
    py4j.protocol.Py4JJavaError: An error occurred while calling 
    java.lang.UnsupportedOperationException: Unsupported data type: 
    Ideally, we could let users know how to bypass the issue. For example, let 
them disable the conf `spark.sql.execution.arrow.enabled`.


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