HeartSaVioR commented on issue #23859: [SPARK-26956][SQL] remove streaming output mode from data source v2 APIs URL: https://github.com/apache/spark/pull/23859#issuecomment-466273566 I'm sorry but I can't find mentioning of complete mode from neither the doc nor the PR you linked. Btw, here's explanation of `Complete Mode` in doc on Structured Streaming http://spark.apache.org/docs/latest/structured-streaming-programming-guide.html : > Complete Mode - The entire updated Result Table will be written to the external storage. It is up to the storage connector to decide how to handle writing of the entire table. So does the final result for complete mode depend on sink side how to handle truncation - if sink ignores truncation it will have full of data, and if sink does truncation it will only have new data?
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