Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/22941#discussion_r230609046
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/sources/InsertSuite.scala ---
@@ -589,4 +590,33 @@ class InsertSuite extends DataSourceTest with
SharedSQLContext {
sql("INSERT INTO TABLE test_table SELECT 2, null")
}
}
+
+ test("SPARK-25936 InsertIntoDataSourceCommand does not use Cached Data")
{
--- End diff --
You can move this test suite to CachedTableSuite.scala and use the helper
functions to verify whether the cache is used.
See the example.
```
spark.range(2).createTempView("test_view")
spark.catalog.cacheTable("test_view")
val rddId = rddIdOf("test_view")
assert(!isMaterialized(rddId))
sql("INSERT INTO TABLE test_table SELECT * FROM test_view")
assert(isMaterialized(rddId))
```
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