Question

我有一个简单的查询：

define stream myEventStream (userId string, price int);  
define stream outputStream (avgPrice double, userId string);  

@info(name = 'aQuery')  
from myEventStream#window.time(5000)  
select avg(price) as avgPrice, userId group by userId  
insert into outputStream;

当我添加查询回调时，我没有得到任何回复。

    runtime.addCallback("aQuery", new QueryCallback() {
        @Override
        public void receive(long timeStamp, Event[] inEvents,  Event[] removeEvents) {
            EventPrinter.print(timeStamp, inEvents, removeEvents);
        }
    });

我正在另一个帖子中制作消息：

    final AtomicInteger counter = new AtomicInteger(0);
    final Random rnd = new Random(System.currentTimeMillis());
    ExecutorService executor = Executors.newSingleThreadExecutor();
    executor.submit(() -> {
       while (counter.getAndIncrement() < 100) {
           try {
               handler.send(new Object[]{"user1", rnd.nextInt(100)});
               handler.send(new Object[]{"user2", rnd.nextInt(100)});
               handler.send(new Object[]{"user3", rnd.nextInt(100)});
               System.out.println("Sent: " + counter.get());
               Thread.sleep(1000);
           } catch (InterruptedException e) {
               Thread.currentThread().interrupt();
               throw new RuntimeException(e);
           }
       }
    });

我期待结果每5秒钟。我在这里错过了什么？请帮忙。谢谢。

Answer 1

问题是我在产生事件流的代码之后立即关闭了运行时。然而，我已经能够向运行时发送消息，尽管它已经关闭了。没有例外。

Siddhi我没有收到聚合查询的任何回复

1 个答案: