Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/18865
From the viewpoints of the end users of Spark,
`dfFromFile.select($"_corrupt_record").show()` might not return all the
expected records. ``_corrupt_record`` should return all the records that Spark
SQL fail to parse. If we are unable to output the expected results, we need to
disallow users to do it.
cc @cloud-fan
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