Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/423#discussion_r11870757
--- Diff: core/src/test/java/org/apache/spark/JavaAPISuite.java ---
@@ -182,13 +182,39 @@ public void call(String s) {
Assert.assertEquals(2, foreachCalls);
}
- @Test
- public void toLocalIterator() {
- List<Integer> correct = Arrays.asList(1, 2, 3, 4);
- JavaRDD<Integer> rdd = sc.parallelize(correct);
- List<Integer> result = Lists.newArrayList(rdd.toLocalIterator());
- Assert.assertTrue(correct.equals(result));
- }
+ @Test
+ public void toLocalIterator() {
+ List<Integer> correct = Arrays.asList(1, 2, 3, 4);
+ JavaRDD<Integer> rdd = sc.parallelize(correct);
+ List<Integer> result = Lists.newArrayList(rdd.toLocalIterator());
+ Assert.assertTrue(correct.equals(result));
+ }
+
+ @Test
+ public void zipWithUniqueId() {
+ List<Integer> correct = Arrays.asList(1, 2, 3, 4);
+ JavaPairRDD<Integer, Long> zip =
sc.parallelize(correct).zipWithUniqueId();
+ JavaRDD<Long> indexes = zip.map(new Function<Tuple2<Integer, Long>,
Long>() {
+ @Override
+ public Long call(Tuple2<Integer, Long> t) throws Exception {
+ return t._2();
+ }
+ });
+ Assert.assertTrue(new HashSet<Long>(indexes.collect()).size() == 4);
+ }
+
+ @Test
+ public void zipWithIndex() {
+ List<Integer> correct = Arrays.asList(1, 2, 3, 4);
+ JavaPairRDD<Integer, Long> zip =
sc.parallelize(correct).zipWithIndex();
+ JavaRDD<Long> indexes = zip.map(new Function<Tuple2<Integer, Long>,
Long>() {
+ @Override
+ public Long call(Tuple2<Integer, Long> t) throws Exception {
+ return t._2();
+ }
+ });
+ Assert.assertTrue(new HashSet<Long>(indexes.collect()).size() == 4);
--- End diff --
Should assert the indices are exactly (0, 1, 2, 3).
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