rdblue commented on issue #25453: [SPARK-28730][SQL] Configurable type coercion policy for table insertion URL: https://github.com/apache/spark/pull/25453#issuecomment-523541789 If we want to have just one property, I think what we can do is use different defaults for v1 and v2, but use the same configuration property. That property should only support configuring ANSI and strict modes. That way, setting the property sets the same mode for v1 and v2, but doesn't allow v2 to use the unsafe legacy mode. v1 would continue to default to the legacy mode (unless we want to replace that with ANSI) and v2 would default to whatever is decided by the vote on the dev list.
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