JingsongLi opened a new pull request #9864: [FLINK-14254][table] Introduce 
FileSystemOutputFormat for batch
URL: https://github.com/apache/flink/pull/9864
 
 
   ## What is the purpose of the change
   
   Introduce FileSystemOutputFormat to support all table file system connector 
with partition support in batch mode.
   FileSystemOutputFormat use PartitionWriter to write:
   - DynamicPartitionWriter
   - GroupedPartitionWriter
   - NonPartitionWriter
   FileSystemOutputFormat use FileCommitter to commit temporary files.
   
   ## Verifying this change
   
   Add FileSystemOutputFormatTest.
   
   ## 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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