LantaoJin commented on a change in pull request #27185: [SPARK-30494][SQL]
Avoid duplicated cached RDD when replace an existing view
URL: https://github.com/apache/spark/pull/27185#discussion_r396061452
##########
File path: sql/core/src/test/scala/org/apache/spark/sql/CachedTableSuite.scala
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@@ -1122,4 +1122,47 @@ class CachedTableSuite extends QueryTest with
SQLTestUtils
assert(!spark.catalog.isCached("t1"))
}
}
+
+ test("SPARK-30494 avoid duplicated cached RDD when replace an existing
view") {
+ withTempView("tempView") {
+ spark.catalog.clearCache()
+ sql("create or replace temporary view tempView as select 1")
+ sql("cache table tempView")
+ assert(spark.sharedState.cacheManager.lookupCachedData(sql("select
1")).isDefined)
+ sql("create or replace temporary view tempView as select 1, 2")
+ assert(spark.sharedState.cacheManager.lookupCachedData(sql("select
1")).isEmpty)
+ sql("cache table tempView")
+ assert(spark.sharedState.cacheManager.lookupCachedData(sql("select 1,
2")).isDefined)
+ assert(spark.sharedState.cacheManager.lookupCachedData(sql("select
1")).isEmpty)
Review comment:
Removed
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