mcvsubbu commented on PR #15895:
URL: https://github.com/apache/pinot/pull/15895#issuecomment-2914467426

   > @mcvsubbu To workaround the overhead of watches, you can manually set 
`pinot.query.mse.stats.mode` to `ALWAYS` or `NEVER`
   
   I am guessing that both of these have a cost, and I am trying to understand 
what that cost is. Is it that if I set it to ALWAYS, then there will be some 
incompatibility when queries are processed in MSE?  Or, if I set it to NEVER, 
MSE processing will be sub-optimal?
   
   It is a big ask to set watches on _all_ nodes in the cluster, so I am trying 
to understand what that buys someone.
   @gortiz ?


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