Hi, I'm trying to write a catalog plugin based on spark-3.0-preview, and I found even when I use 'use catalog.namespace' to set the current catalog and namespace, I still need to qualified name in the query.
For example, I add a catalog named 'example_catalog', there is a database named 'test' in 'example_catalog', and a table 't' in 'example_catalog.test'. I can query the table using 'select * from example_catalog.test.t' under default catalog(which is spark_catalog). After I use 'use example_catalog.test' to change the current catalog to 'example_catalog', and the current namespace to 'test', I can query the table using 'select * from test.t', but 'select * from t' failed due to table_not_found exception. I want to know if this is an expected behavior? If yes, it sounds a little weird since I think after 'use example_catalog.test', all the un-qualified identifiers should be interpreted as 'example_catalog.test.identifier'. Attachment is a test file that you can use to reproduce the problem I met. Thanks.
DataSourceV2ExplainSuite.scala
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