Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/2665#discussion_r20183715
--- Diff:
streaming/src/test/java/org/apache/spark/streaming/JavaAPISuite.java ---
@@ -1241,6 +1241,49 @@ public void testUpdateStateByKey() {
@SuppressWarnings("unchecked")
@Test
+ public void testUpdateStateByKeyWithInitial() {
+ List<List<Tuple2<String, Integer>>> inputData = stringIntKVStream;
+
+ List<Tuple2<String, Integer>> initial = Arrays.asList (
+ new Tuple2<String, Integer> ("california", 1),
+ new Tuple2<String, Integer> ("new york", 2));
+
+ JavaRDD<Tuple2<String, Integer>> tmpRDD =
ssc.sparkContext().parallelize(initial);
+ JavaPairRDD<String, Integer> initialRDD = JavaPairRDD.fromJavaRDD
(tmpRDD);
+
+ List<List<Tuple2<String, Integer>>> expected = Arrays.asList(
+ Arrays.asList(new Tuple2<String, Integer>("california", 5),
+ new Tuple2<String, Integer>("new york", 7)),
+ Arrays.asList(new Tuple2<String, Integer>("california", 15),
+ new Tuple2<String, Integer>("new york", 11)),
+ Arrays.asList(new Tuple2<String, Integer>("california", 15),
+ new Tuple2<String, Integer>("new york", 11)));
+
+ JavaDStream<Tuple2<String, Integer>> stream =
JavaTestUtils.attachTestInputStream(ssc, inputData, 1);
+ JavaPairDStream<String, Integer> pairStream =
JavaPairDStream.fromJavaDStream(stream);
+
+ JavaPairDStream<String, Integer> updated = pairStream.updateStateByKey(
+ new Function2<List<Integer>, Optional<Integer>,
Optional<Integer>>() {
+ @Override
+ public Optional<Integer> call(List<Integer> values,
Optional<Integer> state) {
+ int out = 0;
+ if (state.isPresent()) {
+ out = out + state.get();
+ }
+ for (Integer v: values) {
+ out = out + v;
+ }
+ return Optional.of(out);
+ }
+ }, new HashPartitioner(1), initialRDD);
+ JavaTestUtils.attachTestOutputStream(updated);
+ List<List<Tuple2<String, Integer>>> result =
JavaTestUtils.runStreams(ssc, 3, 3);
+
+ Assert.assertEquals(expected, result);
--- End diff --
I think the ordering of records in each batch tripped the unit test. You
can try out this function `assertOrderInvariantEquals` . Its defined in the
same file.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
