devinbost opened a new issue #8433:
URL: https://github.com/apache/pulsar/issues/8433


   We're seeing issues with producing to one of our clusters running Pulsar 
2.4.0. 
   The chart below shows the occurrences of errors producing to the cluster. 
   
![image](https://user-images.githubusercontent.com/7418031/97919321-d3821080-1d14-11eb-9930-b607f15d565d.png)
   
   While looking through the logs, we see:
   
   org.apache.pulsar.broker.loadbalance.impl.LeastLongTermMessageRate - Broker 
x is overloaded
   
   org.apache.pulsar.broker.loadbalance.impl.OverloadShedder - Broker x is 
overloaded despite having no bundles
   
   We got a thread dump. It's quite large, and it appears that almost all of 
the threads are in a WAITING (parking) state. 
   The thread dump file is attached.
   
[thread-dump-broker07.txt](https://github.com/apache/pulsar/files/5478053/thread-dump-broker07.txt)


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