Ngone51 commented on a change in pull request #25943: 
[WIP][SPARK-29261][SQL][CORE] Support recover live entities from KVStore for 
(SQL)AppStatusListener
URL: https://github.com/apache/spark/pull/25943#discussion_r333596371
 
 

 ##########
 File path: core/src/main/scala/org/apache/spark/storage/StorageLevel.scala
 ##########
 @@ -163,6 +163,20 @@ object StorageLevel {
   val MEMORY_AND_DISK_SER_2 = new StorageLevel(true, true, false, false, 2)
   val OFF_HEAP = new StorageLevel(true, true, true, false, 1)
 
+  /**
+   * :: DeveloperApi ::
+   * Return the StorageLevel object with the specified description.
+   */
+  @DeveloperApi
+  def fromDescription(desc: String): StorageLevel = {
 
 Review comment:
   Good suggestion, I'll add a unit test for it.

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