[GitHub] [flink] libenchao opened a new pull request #10594: [FLINK-15266] Fix NPE for case operator code gen in blink planner

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

libenchao opened a new pull request #10594: [FLINK-15266] Fix NPE for case operator code gen in blink planner
URL: https://github.com/apache/flink/pull/10594
 
 
   ## What is the purpose of the change
   
   This pr fixes the NPE bug in blink case operator code gen as described in FLINK-15266. 
   
   ## Brief change log
   
   For case operator result type, generate primitive type only when trueAction and falseAction both return non-null types.
   
   ## Verifying this change
   
   
   ## 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): (yes)
     - 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)
   

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