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Posted to issues@flink.apache.org by StephanEwen <gi...@git.apache.org> on 2017/01/22 16:33:51 UTC

[GitHub] flink issue #3186: [FLINK-5582] [streaming] dd a general distributive aggreg...

Github user StephanEwen commented on the issue:

    https://github.com/apache/flink/pull/3186
  
    Update: The first version had an issue with binary compatibility in the Scala DataStream API:
    
    This Scala API accidentally exposed in Flink 1.0 a public method with an internal type as a parameter (an internal utility method). That should not have been the case, since method cannot be guaranteed when a parameter is a non-public type.
    
    Unfortunately, the automatic tooling for binary compatibility checks is not flexible enough to work around that: Exclusions  for methods do not work if parameter types were altered.
    
    Due to that, the newer version rolls back the cleanup commit that renames the internal `AggregateFunction`.


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