Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/2760#discussion_r18854762
--- Diff: core/src/test/java/org/apache/spark/JavaAPISuite.java ---
@@ -1308,6 +1306,111 @@ public void collectUnderlyingScalaRDD() {
Assert.assertEquals(data.size(), collected.length);
}
+ private static final class IdentityWithDelay<T> implements Function<T,
T> {
+
+ final int delayMillis;
+
+ IdentityWithDelay(int delayMillis) {
+ this.delayMillis = delayMillis;
+ }
+
+ @Override
+ public T call(T x) throws Exception {
+ Thread.sleep(delayMillis);
+ return x;
+ }
+ }
+
+ private static final class BuggyMapFunction<T> implements Function<T, T>
{
+
+ @Override
+ public T call(T x) throws Exception {
+ throw new IllegalStateException("Custom exception!");
+ }
+ }
+
+ @Test
+ public void collectAsync() throws Exception {
+ List<Integer> data = Arrays.asList(1, 2, 3, 4, 5);
+ JavaRDD<Integer> rdd = sc.parallelize(data, 1);
+ JavaFutureAction<List<Integer>> future =
+ rdd.map(new IdentityWithDelay<Integer>(200)).collectAsync();
+ Assert.assertFalse(future.isCancelled());
+ Assert.assertFalse(future.isDone());
+ List<Integer> result = future.get();
+ Assert.assertEquals(result, data);
+ Assert.assertFalse(future.isCancelled());
+ Assert.assertTrue(future.isDone());
+ Assert.assertEquals(future.jobIds().size(), 1);
+ }
+
+ @Test
+ public void foreachAsync() throws Exception {
+ List<Integer> data = Arrays.asList(1, 2, 3, 4, 5);
+ JavaRDD<Integer> rdd = sc.parallelize(data, 1);
+ JavaFutureAction<Void> future = rdd.map(new
IdentityWithDelay<Integer>(200)).foreachAsync(
+ new VoidFunction<Integer>() {
+ @Override
+ public void call(Integer integer) throws Exception {
+ // intentionally left blank.
+ }
+ }
+ );
+ Assert.assertFalse(future.isCancelled());
+ Assert.assertFalse(future.isDone());
+ future.get();
+ Assert.assertFalse(future.isCancelled());
+ Assert.assertTrue(future.isDone());
+ Assert.assertEquals(future.jobIds().size(), 1);
+ }
+
+ @Test
+ public void countAsync() throws Exception {
+ List<Integer> data = Arrays.asList(1, 2, 3, 4, 5);
+ JavaRDD<Integer> rdd = sc.parallelize(data, 1);
+ JavaFutureAction<Long> future = rdd.map(new
IdentityWithDelay<Integer>(200)).countAsync();
+ Assert.assertFalse(future.isCancelled());
+ Assert.assertFalse(future.isDone());
+ long count = future.get();
+ Assert.assertEquals(count, data.size());
+ Assert.assertFalse(future.isCancelled());
+ Assert.assertTrue(future.isDone());
+ Assert.assertEquals(future.jobIds().size(), 1);
+ }
+
+ @Test
+ public void testAsyncActionCancellation() throws Exception {
+ List<Integer> data = Arrays.asList(1, 2, 3, 4, 5);
+ JavaRDD<Integer> rdd = sc.parallelize(data, 1);
+ JavaFutureAction<Long> future = rdd.map(new
IdentityWithDelay<Integer>(200)).countAsync();
+ Thread.sleep(200);
+ future.cancel(true);
+ Assert.assertTrue(future.isCancelled());
+ Assert.assertTrue(future.isDone());
+ try {
+ long count = future.get(2000, TimeUnit.MILLISECONDS);
+ Assert.fail("Expected future.get() for cancelled job to throw
CancellationException");
+ } catch (CancellationException ignored) {
+ // pass
+ }
+ }
+
+ @Test
+ public void testAsyncActionErrorWrapping() throws Exception {
+ List<Integer> data = Arrays.asList(1, 2, 3, 4, 5);
+ JavaRDD<Integer> rdd = sc.parallelize(data, 1);
+ JavaFutureAction<Long> future = rdd.map(new
BuggyMapFunction<Integer>()).countAsync();
+ Thread.sleep(200);
--- End diff --
Not sure why this is necessary. The `get()` call below should cover this
already.
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