Github user xuanyuanking commented on a diff in the pull request:
https://github.com/apache/spark/pull/21370#discussion_r192349075
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -291,37 +310,30 @@ class Dataset[T] private[sql](
}
}
+ val paddedRows = rows.map { row =>
+ row.zipWithIndex.map { case (cell, i) =>
+ if (truncate > 0) {
+ StringUtils.leftPad(cell, colWidths(i))
+ } else {
+ StringUtils.rightPad(cell, colWidths(i))
+ }
+ }
+ }
+
// Create SeparateLine
val sep: String = colWidths.map("-" * _).addString(sb, "+", "+",
"+\n").toString()
// column names
- rows.head.zipWithIndex.map { case (cell, i) =>
- if (truncate > 0) {
- StringUtils.leftPad(cell, colWidths(i))
- } else {
- StringUtils.rightPad(cell, colWidths(i))
- }
- }.addString(sb, "|", "|", "|\n")
-
+ paddedRows.head.addString(sb, "|", "|", "|\n")
sb.append(sep)
// data
- rows.tail.foreach {
- _.zipWithIndex.map { case (cell, i) =>
- if (truncate > 0) {
- StringUtils.leftPad(cell.toString, colWidths(i))
- } else {
- StringUtils.rightPad(cell.toString, colWidths(i))
- }
- }.addString(sb, "|", "|", "|\n")
- }
-
+ paddedRows.tail.foreach(_.addString(sb, "|", "|", "|\n"))
sb.append(sep)
} else {
// Extended display mode enabled
val fieldNames = rows.head
val dataRows = rows.tail
-
--- End diff --
Thanks, done in 7f43a8b.
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