Github user aljoscha commented on the issue: https://github.com/apache/flink/pull/4607 I think we won't merge this as is. There are some thoughts flying around for reworking the BucketingSink to use our own `FileSystem` implementation and also making it work well with S3. I'm quite sure that this work will land in 1.6 but we have to release 1.5 now because it's already late.
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