Examples with FlinkCompletableFuture org.apache.flink.runtime.concurrent.impl.FlinkCompletableFuture used on opensource projects

Example 21 with FlinkCompletableFuture

use of org.apache.flink.runtime.concurrent.impl.FlinkCompletableFuture in project flink by apache.

the class FutureUtilsTest method testConjunctFutureFailureOnFirst.

@Test
public void testConjunctFutureFailureOnFirst() throws Exception {
    CompletableFuture<Object> future1 = new FlinkCompletableFuture<>();
    CompletableFuture<Object> future2 = new FlinkCompletableFuture<>();
    CompletableFuture<Object> future3 = new FlinkCompletableFuture<>();
    CompletableFuture<Object> future4 = new FlinkCompletableFuture<>();
    // build the conjunct future
    ConjunctFuture result = FutureUtils.combineAll(Arrays.asList(future1, future2, future3, future4));
    Future<Void> resultMapped = result.thenAccept(new AcceptFunction<Void>() {

        @Override
        public void accept(Void value) {
        }
    });
    assertEquals(4, result.getNumFuturesTotal());
    assertEquals(0, result.getNumFuturesCompleted());
    assertFalse(result.isDone());
    assertFalse(resultMapped.isDone());
    future2.completeExceptionally(new IOException());
    assertEquals(0, result.getNumFuturesCompleted());
    assertTrue(result.isDone());
    assertTrue(resultMapped.isDone());
    try {
        result.get();
        fail();
    } catch (ExecutionException e) {
        assertTrue(e.getCause() instanceof IOException);
    }
    try {
        resultMapped.get();
        fail();
    } catch (ExecutionException e) {
        assertTrue(e.getCause() instanceof IOException);
    }
}