dbtsai 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-495388996 @cloud-fan I just added a case that writes null value to a non-nullable avro field which will throw runtime null pointer exception. @HyukjinKwon what do you mean? Currently, if the parquet has a required annotation (to represent non-nullable), when we read them back, Spark will still make them as nullable. I think this is an issue we need to fix.
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