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Posted to issues@flink.apache.org by wuchong <gi...@git.apache.org> on 2017/06/01 03:32:18 UTC

[GitHub] flink issue #3993: [FLINK-6725][table] make requiresOver as a contracted met...

Github user wuchong commented on the issue:

    https://github.com/apache/flink/pull/3993
  
    Regarding to (3), I agree with Fabian. From a user's perspective, it is not easy to implement a `getAccumulatorType()` or `getResultType()` contract function, as the signature and return type is complicated.


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