Examples with MailboxExecutorImpl org.apache.flink.streaming.runtime.tasks.mailbox.MailboxExecutorImpl used on opensource projects

Example 1 with MailboxExecutorImpl

use of org.apache.flink.streaming.runtime.tasks.mailbox.MailboxExecutorImpl in project flink by apache.

the class CheckpointedInputGateTest method testPriorityBeforeClose.

/**
 * Tests a priority notification happening right before cancellation. The mail would be
 * processed while draining mailbox but can't pull any data anymore.
 */
@Test
public void testPriorityBeforeClose() throws IOException, InterruptedException {
    NetworkBufferPool bufferPool = new NetworkBufferPool(10, 1024);
    try (Closer closer = Closer.create()) {
        closer.register(bufferPool::destroy);
        for (int repeat = 0; repeat < 100; repeat++) {
            setUp();
            SingleInputGate singleInputGate = new SingleInputGateBuilder().setNumberOfChannels(2).setBufferPoolFactory(bufferPool.createBufferPool(2, Integer.MAX_VALUE)).setSegmentProvider(bufferPool).setChannelFactory(InputChannelBuilder::buildRemoteChannel).build();
            singleInputGate.setup();
            ((RemoteInputChannel) singleInputGate.getChannel(0)).requestSubpartition();
            final TaskMailboxImpl mailbox = new TaskMailboxImpl();
            MailboxExecutorImpl mailboxExecutor = new MailboxExecutorImpl(mailbox, 0, StreamTaskActionExecutor.IMMEDIATE);
            ValidatingCheckpointHandler validatingHandler = new ValidatingCheckpointHandler(1);
            SingleCheckpointBarrierHandler barrierHandler = TestBarrierHandlerFactory.forTarget(validatingHandler).create(singleInputGate, new MockChannelStateWriter());
            CheckpointedInputGate checkpointedInputGate = new CheckpointedInputGate(singleInputGate, barrierHandler, mailboxExecutor, UpstreamRecoveryTracker.forInputGate(singleInputGate));
            final int oldSize = mailbox.size();
            enqueue(checkpointedInputGate, 0, barrier(1));
            // wait for priority mail to be enqueued
            Deadline deadline = Deadline.fromNow(Duration.ofMinutes(1));
            while (deadline.hasTimeLeft() && oldSize >= mailbox.size()) {
                Thread.sleep(1);
            }
            // test the race condition
            // either priority event could be handled, then we expect a checkpoint to be
            // triggered or closing came first in which case we expect a CancelTaskException
            CountDownLatch beforeLatch = new CountDownLatch(2);
            final CheckedThread canceler = new CheckedThread("Canceler") {

                @Override
                public void go() throws IOException {
                    beforeLatch.countDown();
                    singleInputGate.close();
                }
            };
            canceler.start();
            beforeLatch.countDown();
            try {
                while (mailboxExecutor.tryYield()) {
                }
                assertEquals(1L, validatingHandler.triggeredCheckpointCounter);
            } catch (CancelTaskException e) {
            }
            canceler.join();
        }
    }
}

Example 2 with MailboxExecutorImpl

use of org.apache.flink.streaming.runtime.tasks.mailbox.MailboxExecutorImpl in project flink by apache.

the class CheckpointedInputGateTest method setupInputGateWithAlternatingController.

private CheckpointedInputGate setupInputGateWithAlternatingController(int numberOfChannels, NetworkBufferPool networkBufferPool, AbstractInvokable abstractInvokable, RecordingChannelStateWriter stateWriter) throws Exception {
    ConnectionManager connectionManager = new TestingConnectionManager();
    SingleInputGate singleInputGate = new SingleInputGateBuilder().setBufferPoolFactory(networkBufferPool.createBufferPool(numberOfChannels, Integer.MAX_VALUE)).setSegmentProvider(networkBufferPool).setChannelFactory((builder, gate) -> builder.setConnectionManager(connectionManager).buildRemoteChannel(gate)).setNumberOfChannels(numberOfChannels).setChannelStateWriter(stateWriter).build();
    singleInputGate.setup();
    MailboxExecutorImpl mailboxExecutor = new MailboxExecutorImpl(new TaskMailboxImpl(), 0, StreamTaskActionExecutor.IMMEDIATE);
    SingleCheckpointBarrierHandler barrierHandler = TestBarrierHandlerFactory.forTarget(abstractInvokable).create(singleInputGate, stateWriter);
    CheckpointedInputGate checkpointedInputGate = new CheckpointedInputGate(singleInputGate, barrierHandler, mailboxExecutor, UpstreamRecoveryTracker.forInputGate(singleInputGate));
    for (int i = 0; i < numberOfChannels; i++) {
        ((RemoteInputChannel) checkpointedInputGate.getChannel(i)).requestSubpartition();
    }
    return checkpointedInputGate;
}

Example 3 with MailboxExecutorImpl

use of org.apache.flink.streaming.runtime.tasks.mailbox.MailboxExecutorImpl in project flink by apache.

the class CheckpointedInputGateTest method setupInputGate.

private CheckpointedInputGate setupInputGate(int numberOfChannels, NetworkBufferPool networkBufferPool, ConnectionManager connectionManager) throws Exception {
    SingleInputGate singleInputGate = new SingleInputGateBuilder().setBufferPoolFactory(networkBufferPool.createBufferPool(numberOfChannels, Integer.MAX_VALUE)).setSegmentProvider(networkBufferPool).setChannelFactory((builder, gate) -> builder.setConnectionManager(connectionManager).buildRemoteChannel(gate)).setNumberOfChannels(numberOfChannels).build();
    singleInputGate.setup();
    MailboxExecutorImpl mailboxExecutor = new MailboxExecutorImpl(new TaskMailboxImpl(), 0, StreamTaskActionExecutor.IMMEDIATE);
    CheckpointBarrierTracker barrierHandler = new CheckpointBarrierTracker(numberOfChannels, new AbstractInvokable(new DummyEnvironment()) {

        @Override
        public void invoke() {
        }
    }, SystemClock.getInstance(), true);
    CheckpointedInputGate checkpointedInputGate = new CheckpointedInputGate(singleInputGate, barrierHandler, mailboxExecutor, UpstreamRecoveryTracker.forInputGate(singleInputGate));
    for (int i = 0; i < numberOfChannels; i++) {
        ((RemoteInputChannel) checkpointedInputGate.getChannel(i)).requestSubpartition();
    }
    return checkpointedInputGate;
}