Gengliang Wang created SPARK-28331:
--------------------------------------
Summary: Catalogs.load always throws CatalogNotFoundException on
loading built-in catalogs
Key: SPARK-28331
URL: https://issues.apache.org/jira/browse/SPARK-28331
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
In `Catalogs.load`, the `pluginClassName` in the following code
```
String pluginClassName = conf.getConfString("spark.sql.catalog." + name, null);
```
is always null for built-in catalogs, e.g there is a SQLConf entry for
`spark.sql.catalog.session`.
This is because of https://github.com/apache/spark/pull/18852:
SQLConf.conf.getConfString(key, null) always returns null.
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