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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2022/08/22 06:25:25 UTC

[GitHub] [spark] yikf commented on pull request #37601: [SPARK-40150][SQL] Merging file partition dynamically

yikf commented on PR #37601:
URL: https://github.com/apache/spark/pull/37601#issuecomment-1221900085

   Hi @jackylee-ch 
   AFAIK, we will split on there files from `listFiles` to `partitionedFile` by `maxSplitBytes` first,  second,  we will merge this `partitionedFile` to a `Partition`,  I'm not sure how this relates to small files, in theory, even with a large number of small files, merge at `maxSplitBytes` without affecting concurrency ?(probably)


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