HuangZhenQiu opened a new pull request #8303: [FLINK-12343]add file replication 
config for yarn configuration
URL: https://github.com/apache/flink/pull/8303
 
 
   ## What is the purpose of the change
   This pull request add file replication config for Flink yarn configuration. 
This is helpful to accelerate the bootstrap time of containers when Flink 
applications needs 100+ containers by changing the default replication number 
(such 3 for hdfs).
   
   ## Brief change log
     - Add a file-replication in YarnConfigOptions
     - Apply the file-replication  value for each of  application master local 
resources
     - Apply the default file replication value 3 for task manager local 
resources
   
   
   ## Verifying this change
   
   This change is a trivial rework / code cleanup without any test coverage.
   
   ## 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? (docs)
   

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