[jira] [Created] (FLINK-6257) Post-pass OVER windows

["Fabian Hueske (JIRA)" <ji...@apache.org>]

Fabian Hueske created FLINK-6257:
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             Summary: Post-pass OVER windows
                 Key: FLINK-6257
                 URL: https://issues.apache.org/jira/browse/FLINK-6257
             Project: Flink
          Issue Type: Improvement
          Components: Table API & SQL
    Affects Versions: 1.3.0
            Reporter: Fabian Hueske
            Priority: Critical


The OVER windows have been implemented by several contributors.
We should do a post pass over the contributed code and:

* Functionality
** currently every time attributes is allows as ORDER BY attribute. We must check that this is actually a time indicator ({{procTime()}}, {{rowTime()}}) an that the order is ASCENDING.
* Documentation
** Add documentation for OVER windows
* Code style
** Consistent naming of {{ProcessFunctions}} and methods
* Tests
** Move the OVER window tests out of SqlITCase into a dedicated class
** Move the OVER window tests out of WindowAggregateTest into a dedicated class
** Add tests based on the test harness for all {{ProcessFunctions}} similar to {{BoundedProcessingOverRangeProcessFunction}}. The tests should include exact boundary checks for range windows and check for proper parallelization with multiple keys.




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