[GitHub] wenhuitang opened a new pull request #7076: [FLINK-10674] [table] Fix DistinctAccumulator.remove lead to NPE.

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

wenhuitang opened a new pull request #7076: [FLINK-10674] [table] Fix DistinctAccumulator.remove lead to NPE.
URL: https://github.com/apache/flink/pull/7076
 
 
   
   ## What is the purpose of the change
   This pull request fixes the problem reported by FLINK-10674 DistinctAccumulator.remove lead to NPE.
   
   
   ## Brief change log
   DistinctAccumulator.remove deals with the situation that there is no corresponding instance of the parameters in the distinct map.
   
   ## Verifying this change
   
   *(Please pick either of the following options)*
   
   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): (yes / no) no
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / no) no
     - The serializers: (yes / no / don't know) no
     - The runtime per-record code paths (performance sensitive): (yes / no / don't know) no
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / no / don't know) no
     - The S3 file system connector: (yes / no / don't know) no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes / no) 
       no
     - If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented)
   

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