hanahmily commented on issue #13326:
URL: https://github.com/apache/skywalking/issues/13326#issuecomment-3007226863

   After some investigation, I've identified potential issues with the reduce 
step:
   
   - Increased traffic between liaison nodes
   - Longer delays in receiving results
   - Greater risk of unavailability
   
   To address these issues, I propose that we write the mapping results 
directly to the data nodes by appending the liaison node ID to each entity, in 
case results override each other. The query step will play the "reduce" role as 
it always did.


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