Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/12777#issuecomment-215697713
BTW, during doing this, I realised there is a unused classe and functions
due to the change of `HadoopFsRelation`.
- The class `OrcTableScan` is not used and It seems
`OrcRelation.buildReader` is doing exactly the same thing.
- The functions `initializeLocalJobFunc`, `initializeDriverSideJobFunc` and
`overrideMinSplitSize` in `ParquetRelation` are not also being used but I guess
`overrideMinSplitSize()` is not handled in `ParquetRelation.buildReader`.
Could I maybe test this like https://github.com/apache/spark/pull/8346 for
`overrideMinSplitSize` and remove those?
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