cloud-fan commented on issue #28137: [SPARK-31361][SQL] Rebase datetime in parquet/avro according to file written Spark version URL: https://github.com/apache/spark/pull/28137#issuecomment-610225607 Partial upgrade is still possible, e.g. write files using 2.4 and read using 3.0. It's not possible to do the opposite though, as forward compatibility is not guaranteed. And that config doesn't really help too much with the forward compatibility: it's hard for users to know when to enable that config.
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