[GitHub] [flink] dianfu opened a new pull request #8719: [FLINK-12767][python] Support user defined connectors/format

[GitBox <gi...@apache.org>]

dianfu opened a new pull request #8719: [FLINK-12767][python] Support user defined connectors/format
URL: https://github.com/apache/flink/pull/8719
 
 
   ## What is the purpose of the change
   
   *Currently, only built-in connectors such as FileSystem/Kafka/ES are supported and only built-in formats such as OldCSV/JSON/Avro/CSV/ are supported. There is no way provided for users to use other connectors or formats in Python Table API. We should provide a convenient way for the connectors/formats that are not built-in supported. This pull request adds this support.*
   
   ## Brief change log
   
     - *Add CustomFormatDescriptor and CustomConnectorDescriptor in flink-table-common*
     - *Add the corresponding CustomFormatDescriptor and CustomConnectorDescriptor in flink-python*
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
     - *Added tests CustomFormatDescriptorTests and CustomConnectorDescriptorTests*
   
   ## 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 applicable)
   

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