Github user ehiggs commented on the pull request:
https://github.com/apache/spark/pull/4204#issuecomment-71740260
Thanks for your feedback.
So the `FileInputFormat` is responsible for sorting the file pieces. I
think this means any file format that one expects `sortByKey` to survive being
saved and reloaded will have to, at the least, copy paste the
`FileInputFormat.getSplits` and add a sort. It makes sense since
`FileInputFormat` is in the hadoop project and hadoop doesn't really care about
the ordering. It feels a bit inelegant. Is there a better solution?
If that's the solution, then I guess we can close this and the open ticket.
Thanks
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