cloud-fan commented on a change in pull request #24469: [SPARK-27576][SQL]
table capability to skip the output column resolution
URL: https://github.com/apache/spark/pull/24469#discussion_r281086466
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/NamedRelation.scala
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@@ -21,4 +21,7 @@ import
org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
trait NamedRelation extends LogicalPlan {
def name: String
+
+ // When true, the schema of input data must match the schema of this
relation, during write.
+ def requireSchemaMatch: Boolean = true
Review comment:
Moving DS v2 to catalyst module should be done soon, we can wait for it. BTW
do we still need `NamedRelation` after that? It looks to me that
`NamedRelation` is mostly for testing. Currently only the v2 relation class
extends it.
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