Github user tillrohrmann commented on the issue:
https://github.com/apache/flink/pull/4872
This PR does not strictly depend on the `MetricFetcher` changes. The reason
why they are is simply that I directly wanted to adapt the `MetricFetcher`
which I touched with #4852. It just turned out later that I would be fixing
FLINK-7100 with this PR as well.
I actually think that #4852 can also be merged into the release branch.
However, if you insist, then I can try to disentangle this PR from the
`MetricFetcher` changes.
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