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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2020/02/24 13:55:07 UTC
[GitHub] [spark] EnricoMi commented on issue #27377: [SPARK-30666][Core]
Reliable single-stage accumulators
EnricoMi commented on issue #27377: [SPARK-30666][Core] Reliable single-stage accumulators
URL: https://github.com/apache/spark/pull/27377#issuecomment-590330285
@databricks-david-lewis I have stripped out the notion of `AccumulatorMode` and only implemented a single mode, formerly called `FIRST`. The `ReliableAccumulator` only merges the first accumulator value per partition (`fragmentId`). This reduces the footprint of this PR significantly.
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