zemin-piao commented on PR #12950:
URL: https://github.com/apache/druid/pull/12950#issuecomment-1227210718

   > seems to me that it would make most sense to change behavior of existing 
config to your proposed behavior of hiddenPropertiesContain. The existing 
behavior should still match and exclude exact matches so clusters who leverage 
the config already won't see a difference on upgrade. This way there is only 
one configuration to manage. Unless I'm missing some issue that this would 
introduce?
   > 
   > also, if this config is still not documented as the issue states, we 
should add the config to documentation for clarity.
   
   Indeed using one field approach is elegant and users don't need to remember 
many properties. If we directly adjust the behavior for `hiddenProperties` 
field, upgrading won't be a problem. Regarding backward compatibility, there is 
only one scenario where someone sets the property to ['pwd', 'key'], and after 
downgrading this won't work. For this scenario, should I include in the 
documentation? Or any other advices on this point? 


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