Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2359
We can unfortunately not merge this change. The tools for API compatibility
verify that this breaks the API:
```
Failed to execute goal
com.github.siom79.japicmp:japicmp-maven-plugin:0.7.0:cmp (default) on project
flink-streaming-java_2.10: Breaking the build because there is at least one
binary incompatible class: org.apache.flink.streaming.api.datastream.DataStream
```
The issue has been scheduled for Flink 2.0 - let's redo once this is on the
horizon. Could you close the pull request?
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