[GitHub] spark issue #16196: [SPARK-18231] Optimise SizeEstimator implementation

[a-roberts <gi...@git.apache.org>]

Github user a-roberts commented on the issue:

    https://github.com/apache/spark/pull/16196
  
    It's on my to-do list, working on this once I'm back from an end of year break, can I get a list of concerns here please? I'll run with them and I think one concern is that we'll underestimate and this'll lead to insufficient memory problems at runtime
    
    Once we figure this out I can add the scenario(s) above as unit tests to ensure any changes here are entirely correct


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