apache
diff --git a/‎sql/core/src/main/scala/org/apache/spark/sql/test/README.md
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diff --git a/‎sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetTest.scala renamed to ‎sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetTest.scala b/‎sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetTest.scala renamed to ‎sql/core/src/test/scala/org/apache/spark/sql/parquet/ParquetTest.scala
diff --git a/‎sql/core/src/main/scala/org/apache/spark/sql/test/SQLTestUtils.scala renamed to ‎sql/core/src/test/scala/org/apache/spark/sql/test/SQLTestUtils.scala b/‎sql/core/src/main/scala/org/apache/spark/sql/test/SQLTestUtils.scala renamed to ‎sql/core/src/test/scala/org/apache/spark/sql/test/SQLTestUtils.scala
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+README
+======
+
+Please do not add any class in this place unless it is used by `sql/console` or Python tests.
+If you need to create any classes or traits that will be used by tests from both `sql/core` and
+`sql/hive`, you can add them in the `src/test` of `sql/core` (tests of `sql/hive`
+depend on the test jar of `sql/core`).