Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22123#discussion_r211132019
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVDataSource.scala
---
@@ -230,7 +232,7 @@ object TextInputCSVDataSource extends CSVDataSource {
CSVDataSource.checkHeader(
--- End diff --
Can we remove `CSVDataSource.checkHeader` and switch to
`CSVDataSource.checkHeaderColumnNames`? Looks `CSVDataSource.checkHeader` is an
overkill and marks hard to read the code.
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