Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/14638
Do you mean to replace the current whole `TableReader.scala` which was
introduced in SPARK-1251 ? I guessed Spark chose this direct access approach
for the performance issue at that time.
Yes. This option is targeting only `TextInputFormat`s. For non-file based
hive tables like Orc/Parquet, this option is ignored.
```scala
val isTextInputFormatTable =
classOf[TextInputFormat].isAssignableFrom(hiveTable.getInputFormatClass)
```
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