dbtsai commented on issue #26085: [SPARK-29434][Core] Improve the MapStatuses 
Serialization Performance
URL: https://github.com/apache/spark/pull/26085#issuecomment-545168597
 
 
   Agree, this PR already speeds up the serialization a bit, and unblocks our 
use-case. I was initially thinking to add another configuration, but also feel 
we have too many tuning parameters in Spark now. Let's see what other people 
think, and if they need to make it faster, we can consider the option to make 
it configurable. 
   
   Thanks. 

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