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Subject [GitHub] [flink] sunhaibotb opened a new pull request #7959: [FLINK-11876] Introduce new TwoInputSelectable, BoundedOneInput and BoundedTwoInput interfaces
Date Tue, 12 Mar 2019 04:16:40 GMT
sunhaibotb opened a new pull request #7959: [FLINK-11876] Introduce new TwoInputSelectable,
BoundedOneInput and BoundedTwoInput interfaces
URL: https://github.com/apache/flink/pull/7959
 
 
   ## What is the purpose of the change
   
   Adds new TwoInputSelectable, BoundedOneInput and BoundedTwoInput interfaces for stream
operators to support selective reading and EndOfInput event processing.
   
   ## Brief change log
   
     - Add new **InputIdentifier** class to represent the identifier for the input(s) of the
operator.
     - Add new **TwoInputSelectable** class for two-input operators that can select the input
to get the next StreamRecord.
     - Add new **BoundedOneInput** class for one-input operators that can process EndOfInput
event.
     - Add new **BoundedTwoInput** class for two-input operators that can proceess EndOfInput
event.
   
   ## Verifying this change
   
   This change is to add some new interfaces which will be covered by the tests of the implemention
subtasks [FLINK-11877](https://issues.apache.org/jira/browse/FLINK-11877) and [FLINK-11878](https://issues.apache.org/jira/browse/FLINK-11878)
.
   
   ## 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? **yes**
     - If yes, how is the feature documented? **JavaDocs**
   

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