Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/22676#discussion_r223593701 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/UnivocityParser.scala --- @@ -273,44 +274,47 @@ private[csv] object UnivocityParser { inputStream: InputStream, shouldDropHeader: Boolean, tokenizer: CsvParser): Iterator[Array[String]] = { - convertStream(inputStream, shouldDropHeader, tokenizer)(tokens => tokens) + val handleHeader: () => Unit = + () => if (shouldDropHeader) tokenizer.parseNext --- End diff -- This is used in schema inference path, where we don't check header. Here only it drops the header.
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