gatorsmile commented on a change in pull request #24741: [SPARK-27322][SQL]
DataSourceV2: Select from multiple catalogs
URL: https://github.com/apache/spark/pull/24741#discussion_r290589946
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/internal/BaseSessionStateBuilder.scala
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@@ -185,6 +186,8 @@ abstract class BaseSessionStateBuilder(
V2WriteSupportCheck +:
V2StreamingScanSupportCheck +:
customCheckRules
+
+ override protected def lookupCatalog(name: String): CatalogPlugin =
session.catalog(name)
Review comment:
I might not get the difference. How to avoid misusing them?
- One is our global catalog? Another is the local catalogs?
- What is the semantics of `lookupCatalog` for SessionCatalog?
- What is the semantics of `lookupCatalog` for CatalogPlugin for DSv2?
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