V2SessionCatalog¶
V2SessionCatalog
is the default session catalog of CatalogManager.
V2SessionCatalog
is a TableCatalog and a SupportsNamespaces.
Creating Instance¶
V2SessionCatalog
takes the following to be created:
V2SessionCatalog
is created when BaseSessionStateBuilder
is requested for one.
Default Namespace¶
defaultNamespace: Array[String]
The default namespace of V2SessionCatalog
is default.
defaultNamespace
is part of the CatalogPlugin abstraction.
Name¶
The name of V2SessionCatalog
is spark_catalog.
Loading Table¶
loadTable
creates a V1Table for a table metadata (from the SessionCatalog).
Loading Function¶
Signature
loadFunction(
ident: Identifier): UnboundFunction
loadFunction
is part of the FunctionCatalog abstraction.
loadFunction
...FIXME
Creating Table¶
Signature
createTable(
ident: Identifier,
columns: Array[Column],
partitions: Array[Transform],
properties: Map[String, String]): Table
createTable(
ident: Identifier,
schema: StructType,
partitions: Array[Transform],
properties: util.Map[String, String]): Table // (1)!
- Deprecated
createTable
is part of the FunctionCatalog abstraction.
createTable
creates a CatalogTable and requests the SessionCatalog to createTable (with ignoreIfExists
flag disabled so when the table already exists a TableAlreadyExistsException
is reported).
In the end, createTable
loads the table.