Github user MaxGekk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21380#discussion_r189879531
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/UnivocityParser.scala
---
@@ -300,14 +302,11 @@ private[csv] object UnivocityParser {
lines
}
- val filteredLines: Iterator[String] =
- CSVUtils.filterCommentAndEmpty(linesWithoutHeader, options)
--- End diff --
I wrote a test in the PR: https://github.com/apache/spark/pull/21394 which
is passed on the current implementation but fails on this PR. After this PR,
lines with multiple whitespaces are not ignored. To ignore such lines, need to
set `ignoreLeadingWhiteSpace` to `true`. See
https://github.com/uniVocity/univocity-parsers/blob/v2.6.3/src/main/java/com/univocity/parsers/csv/CsvParser.java#L106-L110
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