Azure WebJob Scale Out 只有 2 个作业在工作

Question

我在3个实例中得到了一个小的WebJob运行，WebJob是由ServiceBusTrigger触发的，每个job大约需要20秒（为了测试我加了一个sleep）。

现在我向 ServiceBus 队列添加了 3 个项目，但只有 2 个 WebJob 实例在工作。

第三个实例在做什么，我怎样才能让这个实例也在队列中工作？

我的代码非常基础：

    public class Functions
{
    // This function will get triggered/executed when a new message is written 
    // on an Azure Queue called queue.
    public static void ProcessQueueMessage([ServiceBusTrigger("jobs2")] string message, TextWriter log)
    {

        string url = "https://requestb.in/xxxxx";
        log.WriteLine(message);
        log.WriteLine("gotmsg");
        Thread.Sleep(20000);
        log.WriteLine("sending");

        string postData = "test=" + message;

        Console.WriteLine(postData);

        System.Net.WebRequest req = System.Net.WebRequest.Create(url);
        //Add these, as we're doing a POST
        req.ContentType = "application/x-www-form-urlencoded";
        req.Method = "POST";
        //We need to count how many bytes we're sending. Post'ed Faked Forms should be name=value&
        byte[] bytes = System.Text.Encoding.ASCII.GetBytes(postData);
        req.ContentLength = bytes.Length;
        System.IO.Stream os = req.GetRequestStream();
        os.Write(bytes, 0, bytes.Length); //Push it out there
        os.Close();
        System.Net.WebResponse resp = req.GetResponse();
        if (resp == null) return;
        System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
        log.WriteLine(sr.ReadToEnd().Trim());
    }
}

Answer 1

What is the third instance doing and how can i get the instance to also work on the queue?

第三个实例应该作为默认值。我假设 Azure WebApp 对多个实例使用指定的 LoadBalance 策略。而且我们似乎没有办法配置 LoadBalance 策略。在您的情况下，似乎 3 条消息不足以进行测试。请尝试使用更多消息对其进行测试。我在我这边测试它，它工作正常。以下是我使用的发送消息的测试代码

QueueClient.CreateFromConnectionString("connection string", QueueName);

 for (int i = 0; i < 20; i++)
 {
     var sendMessage = new BrokeredMessage("test message"+i);
     client.Send(sendMessage);
 }

Azure WebJob Scale Out 只有 2 个作业在工作

Azure WebJob Scale Out only 2 Jobs working

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