FLINK-20855 Calculating numBuckets exceeds the maximum value of int a…

[hejiefang]

https://issues.apache.org/jira/browse/FLINK-20855

Calculating numBuckets exceeds the maximum value of Int and got a negative number

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Last check on commit f49a883 (Fri May 28 09:09:15 UTC 2021)

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[wuchong]

Could you add a unit test for this?

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[hejiefang]

Could you add a unit test for this?

OK, I will try that.