Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/983#issuecomment-127614982
In many cases, the problem that Tuple0 does not consume anything, will be
caught by the fact that other data that is stored or shipped with the tuple
will advance the stream.
However, relying on that is super dangerous. As soon as you hit a case
where that is not given, it will not work any more.
---
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 [email protected] or file a JIRA ticket
with INFRA.
---
