Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/20705#discussion_r172024213
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
---
@@ -2150,7 +2150,8 @@ class SQLQuerySuite extends QueryTest with
SharedSQLContext {
test("data source table created in InMemoryCatalog should be able to
read/write") {
withTable("tbl") {
- sql("CREATE TABLE tbl(i INT, j STRING) USING parquet")
+ val provider = spark.sessionState.conf.defaultDataSourceName
--- End diff --
So far, the purpose of this PR is **setting once in `SQLConf.scala`** to
order to test a new data source to find out the limitation instead of
**touching every data suite**.
BTW, `spark.sql.sources.default=parquet` doesn't help this existing code
because the SQL has a fixed string `USING parquet`.
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