Github user dilipbiswal commented on the issue: https://github.com/apache/spark/pull/20579 @cloud-fan Thank you. I assumed (wrongly) that we don't want to change the behaviour for an external file based datasource and we wanted to scope our check only to spark built in data sources. I have made the change based on your suggestion. I have parked the verifySchema method in DataSource for now. Pl. let me know if thats the right place or we want to move it to a Utility class ?
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