[GitHub] [rocketmq] XiaoyiPeng opened a new issue #3492: DefaultMQPushConsumerImpl#adjustThreadPool() has no effect.

[GitBox <gi...@apache.org>]

XiaoyiPeng opened a new issue #3492:
URL: https://github.com/apache/rocketmq/issues/3492


   **BUG REPORT**
   
   1. Please describe the issue you observed:
   DefaultMQPushConsumerImpl#adjustThreadPool() has no effect. The code shown below:
   
   ```
   public void adjustThreadPool() {
           long computeAccTotal = this.computeAccumulationTotal();
           long adjustThreadPoolNumsThreshold = this.defaultMQPushConsumer.getAdjustThreadPoolNumsThreshold();
   
           long incThreshold = (long) (adjustThreadPoolNumsThreshold * 1.0);
   
           long decThreshold = (long) (adjustThreadPoolNumsThreshold * 0.8);
   
           if (computeAccTotal >= incThreshold) {
               this.consumeMessageService.incCorePoolSize();
           }
   
           if (computeAccTotal < decThreshold) {
               this.consumeMessageService.decCorePoolSize();
           }
       }
   ```
   The method `ConsumeMessageService#incCorePoolSize()`  has a empty  body and does nothing in their implementation class. For example, in class `org.apache.rocketmq.client.impl.consumerConsumeMessageConcurrentlyService`
   ```
   @Override
       public void incCorePoolSize() {
   
       }
   
       @Override
       public void decCorePoolSize() {
   
       }
   ```
   
   2. Please tell us about your environment:
   
     
       Windows10
   
   


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