AlvaroStream opened a new pull request, #15368:
URL: https://github.com/apache/pulsar/pull/15368

   The deduplication can't be activated at the client level. 
   
   Clarification of where can be activated and explanation about the change in 
Send Timeout.
   
   Lesson learned about possible effects in performance over the broker when it 
is activated.
   
   ### Motivation
   
   We faced a performance issue related to the creation of topics in a broker 
and I missed this information in the documentation. 
   
   As I reviewed the documentation I saw there was not a correct explanation 
about where can the functionality be enable neither why the timeout has to be 
modified to 0.
   
   I hope this helps other use this functionality.
   
   ### Modifications
   
   - Added the possible performance effect
   - Improve explanation of the level where it can be activated
   - Explain the change to timeout in the client.
   
   ### Verifying this change
   
   - [] Make sure that the change passes the CI checks.
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   ### Does this pull request potentially affect one of the following parts:
   
   *If `yes` was chosen, please highlight the changes*
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API: (no)
     - The schema: (no)
     - The default values of configurations: (no)
     - The wire protocol: (no)
     - The rest endpoints: (no)
     - The admin cli options: (no)
     - Anything that affects deployment: (no)
   
   ### Documentation
   
   Check the box below or label this PR directly.
   
   Need to update docs? 
   
   - [ ] `doc-required` 
   - [ ] `no-need-doc`   
   - [X] `doc` 
   - [ ] `doc-added`


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