ableegoldman opened a new pull request, #12836:
URL: https://github.com/apache/kafka/pull/12836

   Users have been seeing a large number of these error messages being logged 
by the RecordCollectorImpl:
   
   ```
   Unable to records bytes produced to topic XXX by sink node YYY as the node 
is not recognized.
   ```
   
   It seems like we try to save all known sink nodes when the record collector 
is constructed, by we do so by going through the known sink topics which means 
we could miss some nodes, for example if dynamic topic routing is used. 
Previously we were logging an error and would skip recording the metric if we 
tried to `send` a record from a sink node it didn't recognize, but there's not 
really any reason to have been tracking the sensors by node in the first place 
-- we can just track the actual sink topics themselves.
   


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