amaliujia commented on code in PR #37287:
URL: https://github.com/apache/spark/pull/37287#discussion_r930309561
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sql/core/src/main/scala/org/apache/spark/sql/internal/CatalogImpl.scala:
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@@ -78,22 +67,18 @@ class CatalogImpl(sparkSession: SparkSession) extends
Catalog {
* Returns a list of databases available across all sessions.
*/
override def listDatabases(): Dataset[Database] = {
- val catalog = currentCatalog()
- val plan = ShowNamespaces(UnresolvedNamespace(Seq(catalog)), None)
- val databases = sparkSession.sessionState.executePlan(plan).toRdd.collect()
- .map(row => catalog + "." + row.getString(0))
- .map(getDatabase)
+ val plan = ShowNamespaces(UnresolvedNamespace(Nil), None)
Review Comment:
To clarify: so the `UnresolvedNamespace` will follow currentCatalog when
input catalog is Nil?
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