Repository: spark
Updated Branches:
  refs/heads/master 784cc07d1 -> be99a99fe


[MINOR][CORE][TEST] Update obsolete `takeSample` test case.

## What changes were proposed in this pull request?

This PR fixes some obsolete comments and assertion in `takeSample` testcase of 
`RDDSuite.scala`.

## How was this patch tested?

This fixes the testcase only.

Author: Dongjoon Hyun <dongj...@apache.org>

Closes #13260 from dongjoon-hyun/SPARK-15481.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/be99a99f
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/be99a99f
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/be99a99f

Branch: refs/heads/master
Commit: be99a99fe7976419d727c0cc92e872aa4af58bf1
Parents: 784cc07
Author: Dongjoon Hyun <dongj...@apache.org>
Authored: Tue May 24 11:09:54 2016 -0700
Committer: Andrew Or <and...@databricks.com>
Committed: Tue May 24 11:09:54 2016 -0700

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 .../test/scala/org/apache/spark/rdd/RDDSuite.scala   | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/be99a99f/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
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diff --git a/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala 
b/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
index 979fb42..a4992fe 100644
--- a/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
+++ b/core/src/test/scala/org/apache/spark/rdd/RDDSuite.scala
@@ -678,27 +678,26 @@ class RDDSuite extends SparkFunSuite with 
SharedSparkContext {
     }
     {
       val sample = data.takeSample(withReplacement = true, num = 20)
-      assert(sample.size === 20)        // Got exactly 100 elements
-      assert(sample.toSet.size <= 20, "sampling with replacement returned all 
distinct elements")
+      assert(sample.size === 20)        // Got exactly 20 elements
       assert(sample.forall(x => 1 <= x && x <= n), s"elements not in [1, $n]")
     }
     {
       val sample = data.takeSample(withReplacement = true, num = n)
-      assert(sample.size === n)        // Got exactly 100 elements
-      // Chance of getting all distinct elements is astronomically low, so 
test we got < 100
+      assert(sample.size === n)        // Got exactly n elements
+      // Chance of getting all distinct elements is astronomically low, so 
test we got < n
       assert(sample.toSet.size < n, "sampling with replacement returned all 
distinct elements")
       assert(sample.forall(x => 1 <= x && x <= n), s"elements not in [1, $n]")
     }
     for (seed <- 1 to 5) {
       val sample = data.takeSample(withReplacement = true, n, seed)
-      assert(sample.size === n)        // Got exactly 100 elements
-      // Chance of getting all distinct elements is astronomically low, so 
test we got < 100
+      assert(sample.size === n)        // Got exactly n elements
+      // Chance of getting all distinct elements is astronomically low, so 
test we got < n
       assert(sample.toSet.size < n, "sampling with replacement returned all 
distinct elements")
     }
     for (seed <- 1 to 5) {
       val sample = data.takeSample(withReplacement = true, 2 * n, seed)
-      assert(sample.size === 2 * n)        // Got exactly 200 elements
-      // Chance of getting all distinct elements is still quite low, so test 
we got < 100
+      assert(sample.size === 2 * n)        // Got exactly 2 * n elements
+      // Chance of getting all distinct elements is still quite low, so test 
we got < n
       assert(sample.toSet.size < n, "sampling with replacement returned all 
distinct elements")
     }
   }


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