Github user fhueske commented on the issue:
https://github.com/apache/flink/pull/3302
Hi @huawei-flink,
thanks for the update! The changes are now pretty much aligned with #3252.
I'm in the process of merging #3252 (running last tests). It would be great if
you could rebase your changes on top of the master once #3252 has been merged.
In order to test the feature, you can integrate `proctime()` into the
`LogicalWindowAggregateRule` and extend the `WindowAggregateTest` for
processing time tumbling windows.
Thanks, Fabian
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