Github user jerryshao commented on the pull request: https://github.com/apache/spark/pull/10197#issuecomment-163096778 I'm really doubt changing to low-level API could guarantee exact-once semantics without any other changes. CC\ @koeninger
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org