[GitHub] [flink] chendonglin521 opened a new pull request #9602: [FLINK-13856][checkpoint] Reduce the delete file api when the checkpo…

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chendonglin521 opened a new pull request #9602: [FLINK-13856][checkpoint] Reduce the delete file api when the checkpo…
URL: https://github.com/apache/flink/pull/9602
 
 
   
   ## What is the purpose of the change
   
   *Reduce the delete file api when the checkpoint is completed*
   
   
   ## Brief change log
   
     - *In full checkpoint, to delete the snapshot(chk-) folder directly*
     - *In incremental checkpoint, deleting the shared state first, and then dropping the exclusive location as a whole.*
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
     - *refator CompletedCheckpoint.doDiscard, add private method  getIncrementKeyedStates to get increment key*
     - * add method void disposeStorageLocation(boolean recursive) throws IOException  in  CompletedCheckpointStorageLocation*
    
   
   ## 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)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (no)
   
   

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