Github user sachingoel0101 commented on the pull request:
https://github.com/apache/flink/pull/861#issuecomment-132193111
They're not coupled at all. But both are related to statistics over data
sets. This is why I combined them both in one. If you're wondering, there is a
JIRA for the column wise statistics as well. [FLINK-2379].
Unless it is absolutely necessary, I'd like to keep them both in one.
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