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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/05/23 17:29:48 UTC
[GitHub] [spark] HyukjinKwon commented on issue #24682: [SPARK-27762][SQL]
[FOLLOWUP] Add behavior change for Avro writer in migration guide
HyukjinKwon commented on issue #24682: [SPARK-27762][SQL] [FOLLOWUP] Add behavior change for Avro writer in migration guide
URL: https://github.com/apache/spark/pull/24682#issuecomment-495311694
Parquet has `OPTIONAL` and `REQUIRED` to represent nullability. I was wondering what happens if we read non-nullable Parquet fields via Spark's nullable field.
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