[GitHub] [pulsar] hepyu commented on issue #12800: 40个分区的topic消息严重不均衡下个别partition无法被consumer消费

Mon, 15 Nov 2021 01:20:07 -0800 


hepyu commented on issue #12800:
URL: https://github.com/apache/pulsar/issues/12800#issuecomment-968689486


   补充7：
   果然如补充6所猜测的一致，当消费者由于GC假死后，分区的topic 
stats中的consumers为空，pulsar-broker应该是通过心跳判断consuemr已经断开了。
   
   
目前从重现&各种现象下的分析结果是：消费者如果使用的是G1（已经做调优），并且在海量消息段时间涌入时，会出现假死，然后从pulsar-broker上断开。导致无法消费。
   
   
![image](https://user-images.githubusercontent.com/3917749/141755180-d48f07c0-83c3-4ff0-a206-4cb4d1b0056e.png)
   
   后边我们会将消费者的GC切换为ZGC验证是否恢复正常。
   


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