Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/11919#discussion_r61708553
--- Diff:
mllib/src/test/scala/org/apache/spark/ml/recommendation/ALSSuite.scala ---
@@ -520,6 +488,81 @@ class ALSSuite
}
}
+class ALSCleanerSuite extends SparkFunSuite {
+ test("Clean shuffles") {
+ val conf = new SparkConf()
+ val localDir = Utils.createTempDir()
+ val tempDir = Utils.createTempDir()
+ def getAllFiles: Set[File] =
+ FileUtils.listFiles(localDir, TrueFileFilter.INSTANCE,
TrueFileFilter.INSTANCE).asScala.toSet
+ try {
+ conf.set("spark.local.dir", localDir.getAbsolutePath)
+ conf.set("spark.shuffle.manager", "sort")
+ val sc = new SparkContext("local[2]", "test", conf)
+ try {
+ sc.setCheckpointDir(tempDir.getAbsolutePath)
+ // Test checkpoint and clean parents
+ val filesBefore = getAllFiles
+ val input = sc.parallelize(1 to 1000)
+ val keyed = input.map(x => (x % 20, 1))
+ val shuffled = keyed.reduceByKey(_ + _)
+ val keysOnly = shuffled.map{case (x, _) => x}
--- End diff --
* space around `{` and before `}`
* This is `shuffled.keys`.
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