wangpeibin713 opened a new pull request #7786: [FLINK-11706] Add the SumFunction to support KeyedStream.sum URL: https://github.com/apache/flink/pull/7786 ## What is the purpose of the change * The goal is to implement a KeyedStream API to sum with field which is array https://issues.apache.org/jira/browse/FLINK-11706 ## Brief change log * add the class: * add ArraySum in SumFucntion to support KeyedStream.sum with the field which is array * add unit test in follow ut * add unit test in AggregationFunctionTest and DataStreamTest ## Verifying this change This change added tests and can be verified as follows: * _Added integration tests for end-to-end deployment with small data collection_ ## 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): _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? no * If yes, how is the feature documented? not documented
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