Github user zentol commented on the pull request: https://github.com/apache/flink/pull/1947#issuecomment-218153465 I'm currently aware of the following issues: * quite a few tests in flink-runtime fail; this is mostly due to a missing integration into the MockEnvironments. Fix coming up * there is an issue in the IO metrics for operations with multiple outputs. This one is a bit more tricky, but a not-so-pretty solution is on the way.
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