maropu commented on issue #27246: [SPARK-30536][CORE][SQL] Sort-merge join operator spilling performance improvements URL: https://github.com/apache/spark/pull/27246#issuecomment-577477384 Does this change only have an good effect only on large data? For example, how about small dataset, e.g., TPCDS sf=10 and cores=1 case?
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