abhishekagarwal87 commented on issue #12701:
URL: https://github.com/apache/druid/issues/12701#issuecomment-1178818287

   @pchang388 - The effort that you have put into investigating this and 
documenting it, is commendable. I am not an expert on the protocol between 
supervisor and peon. I am hoping that someone who is, can comment. Though I 
have fixed one relevant issue in 0.23.0. I will recommend an upgrade and then 
do further troubleshooting. 
   https://github.com/apache/druid/pull/12167 
   
   This will avoid those continuous retries from the supervisor to pause the 
peon. I would also suggest you take flame graphs on peons when you run into 
this issue again. Here is an article on how to do that - 
https://support.imply.io/hc/en-us/articles/360033747953-Profiling-Druid-queries-using-flame-graphs.
 That way, we will know where is peon spending its time on. 


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