Github user kaibozhou closed the pull request at:
https://github.com/apache/flink/pull/3895
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GitHub user kaibozhou opened a pull request:
https://github.com/apache/flink/pull/3895
[FLINK-6544] [table] Expose State Backend Interface for UDAGG
This PR partially solved "Expose State Backend Interface for UDAGG",
support over aggregate and unbounded group aggregate.
