Github user aljoscha commented on the issue:
https://github.com/apache/flink/pull/2269
Not really, the reason for having an ITCase is just that they really
exercise the sink embedded in a proper Flink job, which might bring up
interactions that where overlooked when writing a test case. I think with
proper test cases we could go completely without an ITCase. Which also improves
testing time.
The purpose of the `MiniDFSCluster` is to test the sink against an actual
HDFS cluster because there is some stuff in there that would only be tested
when using HDFS. For example, the truncate support.
tl;dr Go for it and move everything to a test case. ð
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