Github user vanzin commented on the issue:

    https://github.com/apache/spark/pull/17931
  
    > by still sending accumulator name for SQLMetrics
    
    Do you have an idea of how much this undoes the benefits of SPARK-12837? 
You're still avoiding sending the names of internal metrics, but I don't have a 
feel for how many accumulators a large sql query might generate.
    
    Also, is that really necessary? The errors seen in the bug (and that I 
noticed in my testing) were always on the driver side.


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