Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/21182#discussion_r186282286
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVOptions.scala
---
@@ -20,14 +20,16 @@ package org.apache.spark.sql.execution.datasources.csv
import java.nio.charset.StandardCharsets
import java.util.{Locale, TimeZone}
+import scala.collection.immutable.ListMap
--- End diff --
nit: seems not used.
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