dongjoon-hyun commented on a change in pull request #29160:
URL: https://github.com/apache/spark/pull/29160#discussion_r457747220
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File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala
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@@ -211,6 +211,7 @@ class DataFrameReader private[sql](sparkSession:
SparkSession) extends Logging {
*/
def load(path: String): DataFrame = {
// force invocation of `load(...varargs...)`
+ removeExtraOptionsByKey("path")
Review comment:
Before going to the new PR, the following is the result on
`LinkedHashMap`. `LinkedHashMap` doesn't solve the problem.
```scala
val extraOptions = new scala.collection.mutable.LinkedHashMap[String, String]
extraOptions += ("paTh" -> "1")
extraOptions += ("PATH" -> "2")
extraOptions += ("Path" -> "3")
extraOptions += ("patH" -> "4")
extraOptions += ("path" -> "5")
extraOptions.toMap
// Exiting paste mode, now interpreting.
extraOptions: scala.collection.mutable.LinkedHashMap[String,String] =
Map(paTh -> 1, PATH -> 2, Path -> 3, patH -> 4, path -> 5)
res0: scala.collection.immutable.Map[String,String] = Map(PATH -> 2, path ->
5, patH -> 4, Path -> 3, paTh -> 1)
```
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