Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2275
One quick comment (without understanding the functionality of the code):
We are trying to minimize external dependencies, especially to Guava (which
has a lot of version conflicts). If you need utility methods from there,
consider using Flink's utility classes like `Preconditions`. For Guava
`Strings`, it may be worthwhile adding a utility method to Flink `StringUtils`.
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