jiangxb1987 commented on issue #27968: [SPARK-31202][CORE]Improve SizeEstimator for AppendOnlyMap URL: https://github.com/apache/spark/pull/27968#issuecomment-603035675 I understand the size estimation of AppendOnlyMap can be not acute, but the proposed approach may lead to performance regression. Do you have any benchmark result regarding this change?
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