srowen commented on a change in pull request #30647:
URL: https://github.com/apache/spark/pull/30647#discussion_r538461120
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File path: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala
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@@ -304,10 +304,13 @@ class Dataset[T] private[sql](
// For cells that are beyond `truncate` characters, replace it with the
// first `truncate-3` and "..."
schema.fieldNames.toSeq +: data.map { row =>
- row.toSeq.map { cell =>
+ row.toSeq.zip(newDf.schema).map { case (cell, f) =>
val str = cell match {
case null => "null"
case binary: Array[Byte] =>
binary.map("%02X".format(_)).mkString("[", " ", "]")
+ case _ if f.dataType == StringType =>
+ // Escapes meta-characters not to break the `showString` format
+ cell.toString.replaceAll("\n", "\\\\n").replaceAll("\t", "\\\\t")
Review comment:
Just for my curiosity, why is `\\\\t` necessary? the extra escaping?
this seems to replace with the string `\\t` rather than `\t`
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