Github user zhangminglei commented on the issue:
https://github.com/apache/flink/pull/4424
Hey. @fhueske I checked my code again and found it build error i think.
because it is really gives me the wrong error. You are right. I have decided
that I have not build flink project for a long time. So, I guess that is the
main reason leading to that issue. But in order to make sure it is correct. I
will rebuild my flink project and run the test again. If there is no error i
get. I will close this PR and the corresponing JIRA. But I will do a
prediction, there isnt any error i will get ~ Waiting for this.
Thanks, Minglei
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