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Subject [GitHub] [flink] hequn8128 opened a new pull request #8230: [FLINK-10977][table] Add streaming non-window FlatAggregate to Table API
Date Sat, 20 Apr 2019 12:13:34 GMT
hequn8128 opened a new pull request #8230: [FLINK-10977][table] Add streaming non-window FlatAggregate
to Table API
URL: https://github.com/apache/flink/pull/8230
   ## What is the purpose of the change
   This pull request supports (streaming, nonwindow)flatAggregate on Table API.
   ## Brief change log
   - Add user defined table agg function interface
   - Add flatAggregate api on table
   - Resolve expression and build LogicalTableAggregate
   - Add Plan support for table aggregate
   - Add code gen support for table aggregate
   - Add runtime support for table aggregate
   - Add registration for table aggregate
   ## Verifying this change
   This change added tests and can be verified as follows:
    - Added plan test(TableAggregateTest) to verify plan
    - Add IT case(TableAggregateITCase) to verify code gen and runtime logic
    - Add Harness test(TableAggregateHarnessTest) to test runtime logic
    - Add TableAggregateStringExpressionTest to test java.
   ## Does this pull request potentially affect one of the following parts:
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes
/ no)
     - The serializers: (no)
     - The runtime per-record code paths (performance sensitive): (no)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing,
Yarn/Mesos, ZooKeeper: (no)
     - The S3 file system connector: (no)
   ## Documentation
     - Does this pull request introduce a new feature? (yes)
     - If yes, how is the feature documented? (docs)

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