cloud-fan commented on code in PR #50849: URL: https://github.com/apache/spark/pull/50849#discussion_r2094985881
########## sql/core/src/main/scala/org/apache/spark/sql/execution/ExistingRDD.scala: ########## @@ -319,3 +319,51 @@ case class RDDScanExec( override def getStream: Option[SparkDataStream] = stream } + +/** + * A special case of RDDScanExec that is used to represent a scan without a `FROM` clause. + * For example, 'select version()'. + * + * We do not extend `RDDScanExec` in order to avoid complexity due to `TreeNode.makeCopy` and + * `TreeNode`'s general use of reflection. + */ +case class OneRowRelationExec() extends LeafExecNode + with StreamSourceAwareSparkPlan Review Comment: it's not a `StreamSourceAwareSparkPlan` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
