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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/02/06 20:11:12 UTC
[GitHub] [spark] databricks-david-lewis commented on issue #27377:
[WIP][SPARK-30666][Core] Reliable single-stage accumulators
databricks-david-lewis commented on issue #27377: [WIP][SPARK-30666][Core] Reliable single-stage accumulators
URL: https://github.com/apache/spark/pull/27377#issuecomment-583087740
@EnricoMi Let's say we are aggregating a column of longs, but the values are not all positive.
In that case taking the "max" would always give the right value.
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