maropu commented on a change in pull request #28852:
URL: https://github.com/apache/spark/pull/28852#discussion_r445904606
##########
File path:
sql/hive/src/test/scala/org/apache/spark/sql/hive/HiveMetadataCacheSuite.scala
##########
@@ -126,4 +129,39 @@ class HiveMetadataCacheSuite extends QueryTest with
SQLTestUtils with TestHiveSi
for (pruningEnabled <- Seq(true, false)) {
testCaching(pruningEnabled)
}
+
+ test("cache TTL") {
+ val sparkConfWithTTl = new SparkConf().set(SQLConf.METADATA_CACHE_TTL.key,
"1")
+ val newSession =
SparkSession.builder.config(sparkConfWithTTl).getOrCreate().cloneSession()
+
+ withSparkSession(newSession) { implicit spark =>
Review comment:
Yea, `withSQLConf` is usd only for runtime configs, then we cannot use
it for static configs. That's an issue of how-to-write-tests.
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