Github user BryanCutler commented on a diff in the pull request:
https://github.com/apache/spark/pull/22226#discussion_r214157102
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -3493,11 +3493,11 @@ object functions {
def schema_of_json(e: Column): Column = withExpr(new
SchemaOfJson(e.expr))
/**
- * (Scala-specific) Converts a column containing a `StructType`,
`ArrayType` of `StructType`s,
- * a `MapType` or `ArrayType` of `MapType`s into a JSON string with the
specified schema.
+ * (Scala-specific) Converts a column containing a `StructType`,
`ArrayType` or
+ * a `MapType` into a JSON string with the specified schema.
* Throws an exception, in the case of an unsupported type.
*
- * @param e a column containing a struct or array of the structs.
+ * @param e a column containing a struct, a array or a map.
--- End diff --
typo: `a array` -> `an array`
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