arihantdaga opened a new issue #12275:
URL: https://github.com/apache/pulsar/issues/12275


   #### Actual behavior
   
   I just started with pulsar, i setup the cluster on a single node, keeping 
just 1 instance of bookkeeper, zookeeper and broker, following the instructions 
in the docs. And i want to scale it later.
   I took a 4GB server, thinking it should be enough since my load right now is 
almost nil.
   But i have seen that pulsar is consuming 100% memory, even when there is no 
load, not even a single topic. Is it normal, does pulsar require that much 
memory? or it could be some version-specific bug? I am using 2.8.1. with Java 
11. 
   Also, i noted, the memory consumed is growing over time, initially, it was 
only 1.2GB. 
   
   
   #### Steps to reproduce
   
   Following instructions on 
https://pulsar.apache.org/docs/en/deploy-bare-metal/  deploy on a single node. 
   
   #### System configuration
   **Pulsar version** : 2.8.1
   Ubuntu 20, Open JDk 11. 
   


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