From ed6ebda5c898bad76194fe3a090bef5a14f861c2 Mon Sep 17 00:00:00 2001
From: Evan Chen <chene@us.ibm.com>
Date: Thu, 17 Dec 2015 14:22:30 -0800
Subject: [SPARK-12376][TESTS] Spark Streaming Java8APISuite fails in
 assertOrderInvariantEquals method

org.apache.spark.streaming.Java8APISuite.java is failing due to trying to sort immutable list in assertOrderInvariantEquals method.

Author: Evan Chen <chene@us.ibm.com>

Closes #10336 from evanyc15/SPARK-12376-StreamingJavaAPISuite.
---
 .../test/java/org/apache/spark/streaming/Java8APISuite.java   | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

(limited to 'extras')

diff --git a/extras/java8-tests/src/test/java/org/apache/spark/streaming/Java8APISuite.java b/extras/java8-tests/src/test/java/org/apache/spark/streaming/Java8APISuite.java
index 89e0c7fdf7..e8a0dfc0f0 100644
--- a/extras/java8-tests/src/test/java/org/apache/spark/streaming/Java8APISuite.java
+++ b/extras/java8-tests/src/test/java/org/apache/spark/streaming/Java8APISuite.java
@@ -439,9 +439,14 @@ public class Java8APISuite extends LocalJavaStreamingContext implements Serializ
    */
   public static <T extends Comparable<T>> void assertOrderInvariantEquals(
     List<List<T>> expected, List<List<T>> actual) {
-    expected.forEach((List<T> list) -> Collections.sort(list));
-    actual.forEach((List<T> list) -> Collections.sort(list));
-    Assert.assertEquals(expected, actual);
+    expected.forEach(list -> Collections.sort(list));
+    List<List<T>> sortedActual = new ArrayList<>();
+    actual.forEach(list -> {
+        List<T> sortedList = new ArrayList<>(list);
+        Collections.sort(sortedList);
+        sortedActual.add(sortedList);
+    });
+    Assert.assertEquals(expected, sortedActual);
   }
 
   @Test
-- 
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