Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/2760#discussion_r18854489
--- 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());
--- End diff --
Not sure what's the Spark convention, but we generally do this around here:
import static org.junit.Assert.*;
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