Examples with EventAnnouncement org.apache.flink.runtime.io.network.api.EventAnnouncement used on opensource projects

Example 6 with EventAnnouncement

use of org.apache.flink.runtime.io.network.api.EventAnnouncement in project flink by apache.

the class RemoteInputChannel method announce.

private SequenceBuffer announce(SequenceBuffer sequenceBuffer) throws IOException {
    checkState(!sequenceBuffer.buffer.isBuffer(), "Only a CheckpointBarrier can be announced but found %s", sequenceBuffer.buffer);
    checkAnnouncedOnlyOnce(sequenceBuffer);
    AbstractEvent event = EventSerializer.fromBuffer(sequenceBuffer.buffer, getClass().getClassLoader());
    checkState(event instanceof CheckpointBarrier, "Only a CheckpointBarrier can be announced but found %s", sequenceBuffer.buffer);
    CheckpointBarrier barrier = (CheckpointBarrier) event;
    return new SequenceBuffer(EventSerializer.toBuffer(new EventAnnouncement(barrier, sequenceBuffer.sequenceNumber), true), sequenceBuffer.sequenceNumber);
}

Example 7 with EventAnnouncement

use of org.apache.flink.runtime.io.network.api.EventAnnouncement in project flink by apache.

the class ChannelStatePersister method checkForBarrier.

protected OptionalLong checkForBarrier(Buffer buffer) throws IOException {
    AbstractEvent event = parseEvent(buffer);
    if (event instanceof CheckpointBarrier) {
        long barrierId = ((CheckpointBarrier) event).getId();
        long expectedBarrierId = checkpointStatus == CheckpointStatus.COMPLETED ? lastSeenBarrier + 1 : lastSeenBarrier;
        if (barrierId >= expectedBarrierId) {
            logEvent("found barrier", barrierId);
            checkpointStatus = CheckpointStatus.BARRIER_RECEIVED;
            lastSeenBarrier = barrierId;
            return OptionalLong.of(lastSeenBarrier);
        } else {
            logEvent("ignoring barrier", barrierId);
        }
    }
    if (event instanceof EventAnnouncement) {
        // NOTE: only remote channels
        EventAnnouncement announcement = (EventAnnouncement) event;
        if (announcement.getAnnouncedEvent() instanceof CheckpointBarrier) {
            long barrierId = ((CheckpointBarrier) announcement.getAnnouncedEvent()).getId();
            logEvent("found announcement for barrier", barrierId);
            return OptionalLong.of(barrierId);
        }
    }
    return OptionalLong.empty();
}