Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/2653
@wuchong thanks for updating the PR! It looks good now. I will rebase it,
quickly scan over the code again and merge it tomorrow.
However, we should fix FLINK-5223 as soon as possible. It would be great if
someone could do that before the 1.2 release.
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