Github user rdblue commented on a diff in the pull request: https://github.com/apache/spark/pull/20490#discussion_r167321301 --- Diff: sql/core/src/main/java/org/apache/spark/sql/sources/v2/writer/DataSourceWriter.java --- @@ -62,6 +62,16 @@ */ DataWriterFactory<Row> createWriterFactory(); + /** + * Returns whether Spark should use the commit coordinator to ensure that only one attempt for --- End diff -- I agree we shouldn't link to an internal class, but I don't think this is the place to document the built-in coordinator's behavior. Is there already a doc for that elsewhere that is public?
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