dongjoon-hyun commented on a change in pull request #30934:
URL: https://github.com/apache/spark/pull/30934#discussion_r549043658



##########
File path: 
core/src/test/scala/org/apache/spark/storage/FallbackStorageSuite.scala
##########
@@ -227,43 +228,45 @@ class FallbackStorageSuite extends SparkFunSuite with 
LocalSparkContext {
     }
   }
 
-  test("Newly added executors should access old data from remote storage") {
-    sc = new SparkContext(getSparkConf(2, 0))
-    withSpark(sc) { sc =>
-      TestUtils.waitUntilExecutorsUp(sc, 2, 60000)
-      val rdd1 = sc.parallelize(1 to 10, 2)
-      val rdd2 = rdd1.map(x => (x % 2, 1))
-      val rdd3 = rdd2.reduceByKey(_ + _)
-      assert(rdd3.collect() === Array((0, 5), (1, 5)))
+  Seq("lz4", "snappy", "zstd").foreach { codec =>

Review comment:
       Sure, I'll add that, @MaxGekk .




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