Examples with ContainerDelegate org.apache.tez.dag.app.MockDAGAppMaster.ContainerDelegate used on opensource projects

Example 1 with ContainerDelegate

use of org.apache.tez.dag.app.MockDAGAppMaster.ContainerDelegate in project tez by apache.

the class TestMockDAGAppMaster method testConcurrencyLimit.

@Test(timeout = 100000)
public void testConcurrencyLimit() throws Exception {
    // the test relies on local mode behavior of launching a new container per task.
    // so task concurrency == container concurrency
    TezConfiguration tezconf = new TezConfiguration(defaultConf);
    final int concurrencyLimit = 5;
    MockTezClient tezClient = new MockTezClient("testMockAM", tezconf, true, null, null, null, null, false, false, concurrencyLimit * 4, 1000);
    tezClient.start();
    MockDAGAppMaster mockApp = tezClient.getLocalClient().getMockApp();
    MockContainerLauncher mockLauncher = mockApp.getContainerLauncher();
    mockLauncher.startScheduling(false);
    final AtomicInteger concurrency = new AtomicInteger(0);
    final AtomicBoolean exceededConcurrency = new AtomicBoolean(false);
    mockApp.containerDelegate = new ContainerDelegate() {

        @Override
        public void stop(ContainerStopRequest event) {
            concurrency.decrementAndGet();
        }

        @Override
        public void launch(ContainerLaunchRequest event) {
            int maxConc = concurrency.incrementAndGet();
            if (maxConc > concurrencyLimit) {
                exceededConcurrency.set(true);
            }
            System.out.println("Launched: " + maxConc);
        }
    };
    DAG dag = DAG.create("testConcurrencyLimit");
    Vertex vA = Vertex.create("A", ProcessorDescriptor.create("Proc.class"), 20).setConf(TezConfiguration.TEZ_AM_VERTEX_MAX_TASK_CONCURRENCY, String.valueOf(concurrencyLimit));
    dag.addVertex(vA);
    mockLauncher.startScheduling(true);
    DAGClient dagClient = tezClient.submitDAG(dag);
    dagClient.waitForCompletion();
    Assert.assertEquals(DAGStatus.State.SUCCEEDED, dagClient.getDAGStatus(null).getState());
    Assert.assertFalse(exceededConcurrency.get());
    tezClient.stop();
}