huaxingao commented on a change in pull request #34914:
URL: https://github.com/apache/spark/pull/34914#discussion_r777785755
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/connector/expressions/expressions.scala
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@@ -106,26 +106,31 @@ private[sql] final case class BucketTransform(
columns: Seq[NamedReference],
sortedColumns: Seq[NamedReference] = Seq.empty[NamedReference]) extends
RewritableTransform {
- override val name: String = "bucket"
+ override val name: String = if (sortedColumns.nonEmpty) "sortedBucket" else
"bucket"
override def references: Array[NamedReference] = {
arguments.collect { case named: NamedReference => named }
}
- override def arguments: Array[Expression] = numBuckets +: columns.toArray
-
- override def describe: String =
+ override def arguments: Array[Expression] = {
if (sortedColumns.nonEmpty) {
- s"bucket(${arguments.map(_.describe).mkString(", ")}," +
- s" ${sortedColumns.map(_.describe).mkString(", ")})"
+ (columns.toArray :+ numBuckets) ++ sortedColumns
} else {
- s"bucket(${arguments.map(_.describe).mkString(", ")})"
+ numBuckets +: columns.toArray
Review comment:
If there are `sortedColumn`, we need `numBuckets` in between of
`columns` and `sortedColumns`, because we need a way to figure out which
elements in the array are for columns, and which elements are for
sortedColumns.
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