MaxGekk commented on a change in pull request #31676:
URL: https://github.com/apache/spark/pull/31676#discussion_r584484615
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2Commands.scala
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@@ -347,7 +347,7 @@ case class DescribeRelation(
partitionSpec: TablePartitionSpec,
isExtended: Boolean) extends Command {
override def children: Seq[LogicalPlan] = Seq(relation)
- override def output: Seq[Attribute] =
DescribeCommandSchema.describeTableAttributes()
+ override val output: Seq[Attribute] =
DescribeCommandSchema.describeTableAttributes()
Review comment:
> Then it's more stable and the output won't change after
copy/transformation.
ok. `val output` will be re-initialized per every `.copy()`. I will make it
as a case class parameter.
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