Github user fhueske commented on the pull request:
https://github.com/apache/flink/pull/1721#issuecomment-190163255
That's a good point, but I don't think we should actually do this.
It is fine to be more conservative than the provided guarantees. However,
by updating the drivers to strictly follow the object-reuse guarantees we would
risk to (silently) break existing code.
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