imback82 commented on a change in pull request #30598:
URL: https://github.com/apache/spark/pull/30598#discussion_r536275320
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/v2Commands.scala
##########
@@ -706,3 +705,13 @@ case class ShowPartitions(
override val output: Seq[Attribute] = Seq(
AttributeReference("partition", StringType, nullable = false)())
}
+
+/**
+ * The logical plan of the CACHE TABLE command.
+ */
+case class CacheTable(
+ table: LogicalPlan,
+ multipartIdentifier: Seq[String],
+ query: Option[LogicalPlan],
Review comment:
One issue is invalidating the cache:
```
sql("CACHE TABLE tmp AS SELECT id FROM testcat.ns.tbl")
sql("DROP TABLE testcat.ns.tbl")
```
, where invalidating callback uses `DataSourceV2Relation`:
https://github.com/apache/spark/blob/acc211d2cf0e6ab94f6578e1eb488766fd20fa4e/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/DataSourceV2Strategy.scala#L59-L62
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