Stylistic changes from Spark maintainers

[ajacques]

Improvements as requested by Spark maintainers in apache#21889

[mallman]

Thanks for your PR, @ajacques. I will review in earnest.

[mallman]

@ajacques Thanks for addressing the merge conflicts. I've been occupied with some other work-related responsibilities today. I'll try to get to this tomorrow (Friday).

Cheers.

[mallman]

@ajacques Should I give co-attribution to @HyukjinKwon for this work? As-is it only has your name on it.

[HyukjinKwon]

I'm okay in any way.

[mallman]

@ajacques I removed my changes to ParquetTest.scala upstream. Can you do a rebase and verify that your PR includes no changes to ParquetTest.scala? Thanks.

[mallman]

I don't see field1 in structOfArray. Please remove it here or add it there.

[ajacques]

You're correct, good catch. I've removed this one. field1 is belongs in the previous schema.

[ajacques]

@ajacques Should I give co-attribution to @HyukjinKwon for this work? As-is it only has your name on it.

Sure, let's do that. HyukjinKwon's comments were a valuable resource in this pull request. Is there anything I need to do on my end for this?

@ajacques I removed my changes to ParquetTest.scala upstream. Can you do a rebase and verify that your PR includes no changes to ParquetTest.scala? Thanks.

Rebased, and checked that there's no changes to that file now.

[mallman]

Merged. Thank you.