lhotari commented on pull request #11414:
URL: https://github.com/apache/pulsar/pull/11414#issuecomment-884481366


   In GitHub Actions, there's a certain cgroup used for running jobs. It sets 
swappiness to 60 by default. 
   
   Here's the output of `cgget actions_job` within the GitHub Actions VM: 
https://gist.github.com/lhotari/184493f13bd033b4ea28e482ec97f887
   
   Another detail is that the VM runs `hv_balloon` which is typically used to 
overcommit memory on VMs. If there isn't memory in the host, the memory 
allocation could fail. However that doesn't seem to be the likely reason.


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